Resource Center

  1. What is in your Hand Sanitizer?

    What is in your Hand Sanitizer?

    In response to the public health emergency, the Food and Drug Administration has pronounced a policy for all facilities compounding certain alcohol-based hand sanitizer products. The guidelines provided by the FDA are crafted by a team of experts who have performed thorough research on hand sanitizer compounding. These guidelines are shared with the general public as a strongly suggested protocol for the temporary compounding of sanitizing rubs.
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  2. Ohaus Guardian Series

    Ohaus Guardian Series

    The NEW Ohaus Technology is uniquely designed into each of the Guardian Hotplate Stirrers. These Hot Plate Stirrers combine durability and affordability while keeping your lab new and modern. The "Smart" features include SmartLink, SmartPresence, SmartHeat, SafetyHeat, SmartRate, and SmartHousing.
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  3. Choosing the Right IPA for your Lab

    Choosing the Right IPA for your Lab

    Isopropyl Alcohol is a very commonly used disinfecting agent. Also known as 2-propanol, isopropanol, and IPA, this chemical has several different purity grades. Each grade is designed for a different use. IPA is beneficial for many companies as a cleaning and disinfectant agent and can remove all kinds of bacteria and impurities depending on the concentration, differing solutions, and purity grades. Two very commonly known grades of Isopropyl Alcohol are 70% and 99%. Important factors to both grades are the key uses, proper use, and best practices when using in your buisness or laboratory environment.
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  4. Ergonomic Lab Chairs

    Ergonomic Lab Chairs

    The best discoveries in science always begin by taking a seat. Whether it is endless hours spent working with liquid handling devices in a wet lab, or pouring over spreadsheets in a dry lab, it is critically important for researchers to be properly supported while they work.
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  5. Dynalon Aerosol Containment Shield

    Dynalon Aerosol Containment Shield

    Keeping all medical personnel safe is critical to the curve of COVID-19 (Coronavirus). The exposure to aerosolized coronavirus is a huge health risk for professionals. Completing tasks such as intubation or nebulized breathing treatments pose a significant risk with COVID-19 patients.
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  6. Disposable Face Shield

    Disposable Face Shield

    TrippNT's Disposable Face Shield (v 2.0) is comfortable, lightweight and easy to put on. It's flexibility allows it to be worn over any eyeglasses or safety goggles. It can be moved and positioned easily to fully protect the face. Disposable as needed.
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  7. RICCA Topical Hand Sanitizer

    RICCA Topical Hand Sanitizer

    Meeting the WHO and FDA requirements for effectively killing 99.9% of germs including the Human Coronavirus also known as COVID-19. Carefully formulated with 75% Isopropyl Alcohol and without the unnecessary Fragrances, Artificial Dyes, SLS, Parabens and Phthalates. According to the CDC, using a hand sanitizer with at least 60% alcohol can help you avoid getting sick and spreading germs to others when soap and water are not available. Alcohol-based hand sanitizers can quickly reduce the number of microbes on hands.
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  8. Coronavirus (COVID-19) Updates

    Coronavirus (COVID-19) Updates

    The Lab Depot is closely monitoring the status of the novel coronavirus disease (COVID-19). For frequent updates, prevention tips and symptom information, please visit the Centers for Disease Control (CDC) website or the World Health Organization (WHO) website.  How we can help: As an online distributor in the laboratory equipment, supplies, and chemicals marketspace, we carry products that directly impact researcher's and medical professional's efforts to contain this virus and produce a vaccine. There are shortages on many products, such as face masks, isolation gowns, and hand sanitizer. However, we are closely monitoring each product that we are able to supply that are intended to amplify and assist in the testing and production processes. Below, you will find a list of the relevant items we have available to help protect against COVID-19. We work with many vendors whose raw materials and manufacturing processes are sourced within the United States. If you have any technical questions or concerns regarding our products and their availability, please contact us at 1-800-733-2522 to speak with a live sales rep. Addressing The Hand Sanitizer Demand With an increasingly high demand for hand sanitizer, the US Food and Drug Administration (FDA) has released guidelines to short-term compounders for the temporary production of certain alcohol-based hand sanitizing solutions. For more information about these guidelines, view the FDA Official Guidance Document. For your convenience, we have outlined and linked the suggested hand sanitizer ingredients. Isopropyl Alcohol Hydrogen Peroxide Hydrogen Peroxide, 3% (W/W), Stabilized Reagent Grade Hydrogen Peroxide Topical Solution, USP Glycerol (Glycerin) Glycerin, Synthetic, USP, EP, BP, JP Glycerin, Natural, USP, EP, BP, JP Additional Available Items: Ricca Topical Hand Sanitizer Reagent Alcohol, 70% V/V (LC222104) The Lab Depot will continue to monitor the progression of the virus and announce any changes to our delivery systems, should it be necessary. For more information on the image shown above, visit the website for Centers for Disease Control (CDC).
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  9. H2O Select Analysis Kit - To Evaluate and Recommend

    H2O Select Analysis Kit - To Evaluate and Recommend

    Based on the results of a FREE Thermo Scientific Select Analysis, we will recommend the best water system for your application. We do all the thinking for you! Using our unique H20 SELECT* water analysis program, choosing the right water purification system is made simple. After reviewing the questionnaire included in each sample kit, and performing an analysis of the feed water sample you submit, our water experts will recommend the appropriate equipment and consumables based on your feed water quality, laboratory applications, daily water demand, and budget. The output of this FREE, no obligation service includes a brief summary report of the results of the feed water testing, a recommendation of the system we think will best meet your needs, and an estimated life expectancy of consumables to help you project system operating costs.
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    Reverse Osmosis Water Systems

    Reverse osmosis is the most economical method to remove up to 99% of your water's impurities.  The RO membrane is semi-permeable with a thin microporous surface that rejects virtually all dissolved materials including dissolved inorganic solids, organics, particles and microorganisms. RO water is versatile. RO water can be used to prepare microbiological buffers and chemical reagents.  Additionally, it is a great option for use in general laboratory equipment, such as water baths, humidifiers, and autoclaves.  RO water is also an excellent pretreatment choice for our Type 1 systems.
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    What is Type 2 Water?

    Pure water for a wide range of applications. Pure water is an essential part of creating chemical reagents, microbiological buffers and media that are consistently pure.  It is also an excellent source of water for glassware washing, and as feed water for laboratory equipment such as autoclaves, laboratory dishwashers, and water baths.  It is also a recommended source of pretreated water for your Type 1 ultrapure system.
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    How to Pick a Type 1 Water System

    What features do you need? Pyrogen and/or Nuclease (RNase and DNase) Free Sensitive experiments such as PCR, cell and tissue culutre require ultrapure water that is pyrogen and/or nuclease free. Suggestion: Nanopure Life Science UV/UF or Easypure II UV/UF
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  13. How to Design a Water System

    How to Design a Water System

    What type of water do you need? When designing your water system, we suggest you take time to evaluate the applications and interest areas of the lab now and in the future.  Take a look at the table below to determine what type(s) of water you need.
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  14. What is Type 1 Water?

    What is Type 1 Water?

    What does type 1 water mean? Reagent water has quantitative specifications that describe the level of purity for the water.  These specifications have been described by ASTM (American Socity for Testing and Materials) D1193, ISO (International Organization for Standardization) 3696, and CLSI®-CLRW. (Clinical and Laboratory Standards Institute-Clinical Laboratory Reagent Water). The most commonly used standards, ASTM D1193-6, are summarized in the tables below.
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  15. Cartridge and Filter Systems

    Cartridge and Filter Systems

    We offer a complete line of cartridge and filter systems for all your single step puriffication and pretreatment needs.  Use the Bantam Deionizer, Hose Nipple Cartridges, or B-Pure cartridges for simple, single step purifications.  Additionally, the high capacity B-Pure cartridges serve as an excellent pretreatment system for our Type 1 or Type 2 systems, such as the Nanopure or TII.
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    Selecting a Chiller Pump

    Considerations For Pump Selection Turbine Pumps – Provide moderate flow and moderate pressures (20-90 psi, 1.4-6.9 bar.) which makes them well suited to applications that require higher pressure or experience a higher system pressure drop, such as long tubing runs or pumping vertically. A robust design makes turbine pumps very reliable and forgiving to impurities in the fluid stream. Bronze turbine pumps are standard; stainless steel pumps are available.
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    Selecting a Circulating Bath

    The best PolyScience Circulating Bath for your application will depend on a number of factors. Here are some guidelines to help with your selection. 1. Working Temperature and Stability – You will need a Refrigerated/Heated Circulator if your working temperature will ever be near or below ambient. Applications that require maximum temperatures above 160°C or ±0.01°C temperature stability require Circulators with Performance or Advanced Series Temperature Controllers.
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    Choosing a PolyScience Product

    PolyScience produces a broad range of liquid temperature control equipment. In most cases, our products are not designed for a specific application but rather are engineered to provide stable heating or cooling over common operating temperature ranges. If your application requires maintaining a temperature near or below ambient temperature, then a refrigerated product such as a Recirculating Chiller or Circulating Bath is appropriate. The choice will depend on several factors. The following guidelines will help you determine the type of product, and model, best suited to your application:
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    Glossary of Terms

    At PolyScience, we believe strongly in providing the very best products and the highest level of service to our customers. While we have tried to provide adequate product descriptions, features and explanations throughout our website, we realize that some customers may be interested in more in-depth information than that listed in the product pages. Additionally, some customers may not be familiar with the language and terminology used.
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    Pump Technologies and Selection Chart

    Reference the Pump Technologies illustration to ensure you have the best understanding of your vacuum pump. The Pump Quick Selection Chart can be used as an efficient guide to purchasing the correct pump depending on your intended application. This chart provides quality information for common laboratory applications and practices.
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  21. How To Remove RNase or DNase From Plastic Containers

    How To Remove RNase or DNase From Plastic Containers

    RNase, an enzyme that breaks down RNA, and DNase, which breaks down DNA, are contaminants that can interfere with nucleotide research. DNase can be destroyed by autoclaving for 15 minutes at 121C or by following any of the procedures listed below. One or more of the following techniques will inhibit or remove RNase from your plastic container. Match the resin code on the bottom of your NALGENE container with the correct technique. Heat at 180C for at least 8 hours. Rinse in chloroform. Soak in a 0.1% aqueous solution of diethyl pyrocarbonate (DEPC) for 2 hours at 37C; rinse several times with sterile (DEPC-treated) water***; heat to 100C for 15 minutes OR autoclave for 15 minutes at 121C on a liquid/slow exhaust cycle. (Heating or autoclaving will remove DEPC residues.) Note heating variations in the following chart. Clean equipment with a detergent solution, rinse thoroughly with water and rinse with 95% ethanol to dry. Soak the equipment in a 3% hydrogen peroxide (H2 O2) for 10 minutes at room temperature. Rinse the equipment thoroughly with DEPC-treated water.*** Soak equipment in 0.1N Sodium Hydroxide (NaOH) in 0.1% EDTA in water overnight and then rinse thoroughly with DEPC-treated water.
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  22. Properties of Laboratory Plastics

    Properties of Laboratory Plastics

    Customers of The Lab Depot frequently ask what laboratory plastics should be used for various needs. To help answer that question, the staff at The Lab Depot has put together some information regarding laboratory plastics and their specific uses.  Low Density Polyethylene (LDPE) LDPE is a very useful and popular plastic for laboratory work.  Although it is quite flexible, it is almost unbreakable. Generally it is translucent to opaque.
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  23. Titration - Manual Procedure

    Titration - Manual Procedure

    Titration is a procedure in which a solution – called the titrant – whose concentration is known very accurately is dispensed by a burette and reacted with a known volume of another solution of unknown concentration – called the analyte. By measuring the amount of titrant needed to neutralize the analyte, you can determine the concentration of the analyte very accurately.The "end point" of a titration is the point at which the titration is complete, typically when an added indicator solution such as phenolphthalein changes color. The "equivalence point" is closely related to but not necessarily identical with the end point. The equivalence point is the point at which the number of moles (or equivalents) of titrant exactly equals the number of moles (or equivalents) of analyte.Ideally, the end point should exactly equal the equivalence point, but in the real world they are slightly different. For example, you may titrate a hydrochloric acid analyte with a sodium hydroxide titrant, using phenolphthalein as an indicator. Phenolphthalein is colorless in acid solutions, and pink in base solutions, but no color change occurs until the pH of the solution reaches about 8.2, well into the basic range.
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  24. Cleaning and Reconditioning pHTestr Series Electrodes

    Cleaning and Reconditioning pHTestr Series Electrodes

    Oakton Tech Tips Cleaning and Reconditioning pHTestr Series Electrodes Tech Tip #3 ©1997 Often, the OAKTON® pHTestrs are used in applications which require regular cleaning of the electrode or reference. These applications involve very hard waters (i.e. those with high scale content), dirty samples like soil slurries, viscous materials or samples with high oil and protein content.
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  25. pH Measurement

    pH Measurement

    pH measurement is used in a wide variety of applications: agriculture, wastewater treatment, industrial processes, environmental monitoring, and in research and development. pH is a measure of the acidity or alkalinity of a solution. The pH value states the relative quantity of hydrogen ions (H+) contained in a solution. The greater the concentration of H+ the more acidic the solution and the lower the pH. In this relationship, pH is defined as the negative logarithm of hydrogen activity. A standard pH measuring system consists of three elements: 1) pH electrode; 2) temperature compensation element and 3) pH meter or controller.
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  26. A Definition of pH

    A Definition of pH

    One method used to describe chemicals is pH or "potential of hydrogen". A universally accepted scale for pH that describes chemicals as either "acidic" or "basic" is employed. This pH scale ranges from 0 to 14 with a pH of 7 being neutral; a pH less than 7 being acidic; and a pH greater than 7 being basic. For example, when the value begins at 7.0 and moves toward 0, acidity is indicated.
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  27. Temperature Compensation for pH Instruments

    Temperature Compensation for pH Instruments

    Oakton Tech Tips Temperature Compensation for pH Instruments Tech Tip #11 ©1997   Although it is widely advertised, the need for temperature compensated pH measurements is not always explained  except in technical books and articles. This Tech-Tip will give a brief explanation of the major characteristics of temperature compensation in pH instruments.
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  28. Top Ten frequently asked questions for pHTestrs

    Top Ten frequently asked questions for pHTestrs

    Top Ten frequently asked questions for pHTestrs Tech Tip #21 ©1997   1.  Why won’t my pHTestr turn on? Possible reasons: batteries improperly installed or dead. Possibly keypad is defective. Remedy: reinstall batteries or install new batteries. Replace the pHTestr.  
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  29. Calibrating ORP measurement systems

    Calibrating ORP measurement systems

    Background Like pH, Conductivity/TDS, and other electrochemical measurements, ORP measurements are based on displaying the response of a specialized electrode in a solution. Like pH electrodes, each ORP electrode has unique characteristics that cause variability in the signal the electrodes send to the meter. Both the offset and slope characteristics of the pH electrode must be compensated by calibration to the meter in order to obtain accurate readings. ORP electrodes and measurements present different problems.
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  30. An Introduction to ORP

    An Introduction to ORP

    OAKTON Tech Tip #13 ©1997 Oxidation-Reduction Potential (ORP) or Redox potential measurements are used to monitor chemicalreactions, to quantify ion activity, or to determine the oxidizing or reducing properties of a solution.  ORP is the measurement of the electrical potential of a redox reaction and serves as a yardstick to judge how much oxidation or eduction takes place under existing conditions. ORP electrodes measure the voltage across a circuit formed by the measuring metal half cell and the reference half cell. When the ORP electrode is placed in the presence of oxidizing or reducing agents, electrons are constantly transferred back and forth on its measuring surface, generating a tiny voltage. The ORP measurement can be made using the millivolt mode of a pH meter.  
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  31. Measuring pH of Pure Water

    Measuring pH of Pure Water

    "What could possibly be so difficult about reading the pH of pure water? It should be neutral-pH7.0, and there are no interference’s", common sense says. In practice, it can be quite difficult and often frustrating to obtain reproducible pH values in samples with low-ionic strength. Water that has very few ionic species is said to be low in alkalinity, ionic strength, or have low conductivity/highresistivity such as distilled or deionized (DI) water. It is common to attain different pH values with new, sealed electrodes that calibrate perfectly in pH buffers when attempting to measure DI water.  This is due to the varying junction potentials that develop across the reference junction. Some techniques and product recommendations for overcoming such limitations will be discussed here. 
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  32. Dissolved Oxygen

    Dissolved Oxygen

    Dissolved Oxygen Measurement   Oxygen is one of the essential elements for the existence of life, but life can only exist when the concentration of oxygen falls within certain limits. When measuring oxygen in aquatic environments we are actually measuring the amount of oxygen dissolved in the water; thus the name Dissolved Oxygen or DO for short. The level of DO in water depends on many physical, chemical, and biochemical activities in the sample or at the sample site. The three most important factors to consider are temperature, pressure, and salinity. The amount of oxygen a given sample can hold in solution will vary with the temperature of the sample, the pressure or altitude at which the sample is measured, and the concentration of salts dissolved in the sample.  The analysis of DO is one of the key tests performed in water pollution studies and at waste water treatment facilities. Some other areas where the analysis of dissolved oxygen is important are aquaculture (fish farming), aquatic environments such as fish ponds or aquariums, water quality testing, surface and ground water surveys, and evaluating the safety of potable water.
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    Selecting a Chiller

    Chillers provide heat removal for a wide variety of processes and equipment. When properly sized and selected, a chiller increases production speed and accuracy, protects valuable process equipment, and reduces water consumption and related costs. If it is undersized, the chiller will not cool properly; if it is oversized, it will be inefficient due to excessive cycling. In addition to having an adequate cooling capacity, the chiller must deliver the cooling fluid at the proper pressure and flow rate.
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  34. Rotary Evaporators

    Rotary Evaporators

    If you are searching for a pump for rotary evaporation applications, then this page will provide you with useful information on selecting the correct model. Pumps for rotary evaporators have many features and uses, which we have listed below: • Built-in tuneable vacuum to control evaporation rate • Three vacuum levels to meet your needs • Rugged chemical duty construction to resist harsh vapors DryFast PTFE dry vacuum pumps for rotary evaporators include essential features to ensure efficient rotary evaporation. The DryFast tunable vacuum adjustment allows the user to optimize the vacuum for the solvent being evaporated - see Application Note below. The tunable vacuum adjustment can also be used to stop accidental bumping/foaming.
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  35. Vacuum Manifolds

    Vacuum Manifolds

    Vacuum manifolds are commonly used for the final drying of samples removed from a rotary evaporator. Organic solvents and/or acids left behind during the distillation process are removed over several hours or more depending on the sample size. A foreline cold trap is always recommended to minimize the ingestion of the solvents. An acid neutralization trap is also recommended between the cold trap and the pump when strong acids are present in the sample. When the drying is finished for the day, it is very important to either turn the pump off and remove/clean the trap or isolate the trap from pump using a valve. The reason for this is to prevent sublimation of condensed solids or vaporized liquids from the cold trap from re-condensing in the pump.
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  36. Stirrer Guide

    Stirrer Guide

    Questions you should answer about your stirring application: What are you stirring? What is the approximate viscosity of the solution? What is the vessel size that you will be mixing in? What speed (in rpm) is desired? What is the torque requirement? What is the duration of the operation? What voltage and frequency do you require for the control (most in the U.S. will be 120V, 60Hz, while some areas overseas require 240V, 50Hz)? Are you presently using a stirrer for the application? If so, does it work well, and what is the horsepower of the motor? What agitator (paddle or propeller) do you want?
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  37. Constant Temperature Lab Equipment and Thermoelectric Technology

    Constant Temperature Lab Equipment and Thermoelectric Technology

    Thermoelectric Incubator solutions to reduce your lab’s carbon footprint Using new technology can improve your testing process while reducing your energy usage   Using thermoelectric incubators can reduce your overall energy usage while providing excellent incubator performance. Lab equipment and energy efficiency are often a contradiction in terms and technology. Thermoelectric Incubators from SHEL LAB bring energy saving to the forefront. When you consider reducing energy usage by 75% over traditional compressor based incubators, this product family is a wise choice in today’s laboratory environment. The most common method of powering low temperature incubators has been with compressor-based refrigeration incubators.
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  38. Incubator Selection Tailored To Lab Requirements

    Incubator Selection Tailored To Lab Requirements

    Perhaps no where better than in a laboratory does the old axiom apply that the better tool you have, the better job you can perform. And the better the results will be. Laboratory equipment, particularly controlled temperature equipment, must help ensure that the environment in which specimens or cell cultures are being studied is safe and contaminant-free, and that, above all, study results are reliable.
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  39. Stirrer and Hot Plate Selection Guide

    Stirrer and Hot Plate Selection Guide

    Corning combined the unique Pyroceram® glass-ceramic tops with rugged bodies and heating elements in 1964 to come up with the best recognized hot plates and stirrers in the industry. These Pyroceram tops were literally a space age material developed for missile nosecones. Today there are many more products with the white Pyroceram tops with more robust electronic controls and even digital LED displays.
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  40. The Difference is the Quality

    The Difference is the Quality

    Microflex® Gloves- The Branded Leader You Can Trust Since 1988, Microflex Corporation has been recognized as the quality leader among thin-film hand protectionproviders. Microflex has an innovative approach to the glove market. We design specific gloves for specific needs to help professionals do their job better and consistently protect them. Quality is the Key – ISO 13485 certified In addition to complying with the FDA Quality System Regulation (QSR), Microflex is THE ONLY glove manufacturer that is ISO 13485 registered.This quality assurance sets Microflex apart from the competition.
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  41. Informing Our Customers On Latex Sensitivity

    Informing Our Customers On Latex Sensitivity

    In recent years healthcare professionals and the general public have become increasingly concerned with the hazards of blood-borne pathogens and their mode of transmission. Latex gloves provide a primary form of protection. Many latex gloves for medical and laboratory use are made of natural rubber latex (NRL). NRL is a highly durable and flexible material that provides a high measure of protection against pathogens and environmental contaminants.
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  42. Gloves by Material

    Gloves by Material

    Latex: Natural rubber latex is the most elastic of the materials Microflex uses to make disposable gloves from. It is the original disposable glove material because it is elastic and inexpensive. Scientists have thus far been unable to duplicate the elasticity and low cost associated with natural rubber latex, as such, it remains a dominant player in the disposable glove industry.
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  43. Gloves and Ergonomics for the Laboratory Professional

    Gloves and Ergonomics for the Laboratory Professional

    Over the past two decades, there has been heightened concern across a variety of industries as to the effects of employees developing workplace-related musculoskeletal disorders. As a result, in recent years an increasing number of professionals have developed both short-term as well aspermanent disabilities due to their on-the-job activities.
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  44. Adhesive Properties of Examination Gloves

    Adhesive Properties of Examination Gloves

    Professionals in a variety of industries often find themselves placing labels, or stickers on their gloves while performing day-to-day tasks. This can be a problem, as many adhesive tapes and labels create holes or tear the gloves when pulling the materials off. In fast paced environments where quick decisions are needed,gloves become the canvas for a number of adhesive materials when performing duties in a medical setting.
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  45. Chlorination of Gloves: Benefits and Drawbacks

    Chlorination of Gloves: Benefits and Drawbacks

    Powder-free disposable exam gloves have evolved in their popularity and now dominate the majority of the exam glove industry in both natural rubber latex and synthetic latex materials. A process known as chlorination has been one of the most popular methods of manufacturing gloves that don easily for the user without the addition of powder. Chlorination is a process wherein examination gloves are exposed to chlorine gas or a hypochlorite–hydrochloric acid mixture in order to harden the surface of the glove1. 
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  46. Glassware Care and Use Recommendations

    Glassware Care and Use Recommendations

    A. TO AVOID SERIOUS AND PERSONAL INJURY, AVOID ABRASIONS An abrasion reduces the strength of glass, making it more susceptible to breakage under impact and/or thermal shock. Thermal shock may result from sudden changes in temperature or use on either a burner or hot plate. Serious injuries could result if breakage occurs while glass holds heated and/or corrosive liquid.
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  47. Care and Use - Ground-Glass Surfaces

    Care and Use - Ground-Glass Surfaces

    Ground-glass joints and stopcocks should never be used when dry. although ground-glass surfaces seal well without the use of lubricants, it is advisable to lubricate them to prevent sticking and breakage. Ground surfaces must be cleaned prior to lubrication—dust, dirt and particulate matter may score the surface and cause leakage.  Different lubricants are used for these operating conditions:
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  48. Care and Use - Stopcocks with PTFE Plugs (Polytetrafluoroethylene)

    Care and Use - Stopcocks with PTFE Plugs (Polytetrafluoroethylene)

    Kimble PTfe stopcock plugs are made of the most chemically inert material in laboratory use today. only a few chemicals have any effect on PTfe and these only at elevated temperatures and pressures. The material is extremely tough, durable and heat resistant, with practically zero moisture-absorption. it remains non-brittle even at sub-zero temperatures.  Observe the following hints to obtain maximum performance from your PTfe stopcock plugs:
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    Glass Terminology

    Anneal: To prevent or remove objectionable stresses in glassware by controlled cooling. Binder (Fibrous Glass): Substances employed to bond or hold the fibers together. Blister: An imperfection a relatively large bubble or gaseous inclusion. Check: an imperfection; a surface crack in a glass article. Chill Mark: A wrinkled surface condition on glassware, resulting from uneven contact in the mold prior to forming. Chip: An imperfection due to breakage of a small fragment from an otherwise regular surface. Cord: An unattenuated glassy inclusion, possessing optical and other properties differing from those of the surrounding glass. Cullet: waste or broken glass, usually suitable as an addition to raw batch.
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    Technical Data, Caps & Closures

    The closure industry has not standardized on dimensions to the extent that the container industry has, and it is usually advantageous to buy both container and closure from the same supplier when possible. Similar to the container industry, when a closure fi nish is designated as 33-400, it means that the nominal diameter measured across the inside of the cap at the opening is approximately 33mm.
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  51. Basics about Balances

    Basics about Balances

    Electronic balances used in the laboratory are typically classified as "high precision" or "precision" balances. As such, there are a number of choices - depending on the requirement in the lab. The "high precision" choices mayb include Micro Balances that are capable of determining masses in the level of 1 million parts of a gram and Semi-micro Balances that, generally, determine masses in one-hundred parts of a milligram.
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  52. What is NTEP? Why should I buy an NTEP Scale?

    What is NTEP? Why should I buy an NTEP Scale?

    The National Type Evaluation Program & Why You Need it Many people ask why they should use an NTEP (Legal for Trade) scale or balance instead of any old scale, surely all scales are the same?
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  53. What Does Under Balance Weighing Mean?

    What Does Under Balance Weighing Mean?

    Where is my Hook? Many of our balances are fitted with an under weighing hook facility, for under balance weighing. These hooks are sometimes used to weigh large or bulky items that might otherwise not fit on the platform but more usually they are used in density calculations where the item to be weighed is suspended, first in air and then in water, to determine the density of the item.
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  54. Eliminating Contamination in CO2 Incubators Through Effective Cleaning

    Eliminating Contamination in CO2 Incubators Through Effective Cleaning

    In the ideal laboratory setting, transferring cell growth samples in and out of incubators would be done without concern about contamination and its potential effect on samples. But until environmental control equipment creates this perfect environment, monitoring contamination and ensuring a clean test environment is critical. There are two ways to accomplish this: 1) select an incubator, preferably a CO2 incubator, that has design features that will help to keep contamination at an almost nonexistent level; and 2) follow a cleaning procedure that is thorough and performed on a regular basis.
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  55. Corning® Pyroceram® Glass-Ceramic Story

    Corning® Pyroceram® Glass-Ceramic Story

    In 1952, one of Corning's scientists, Dr. S. D. Stookey, made and accidental but important discovery when an oven malfunction overheated a piece of photosensitive glass on which he was working. The glass turned milky white as a result of heat-induced crystallization and did not break when dropped. The result was a ceramic-like material, the first in a new family of glass-ceramic materials that has led Corning into several new businesses. 
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  56. Spinbar Magnetic Stirring Bar Guide

    Spinbar Magnetic Stirring Bar Guide

    Our Magnetic Stir Bars feature ALNICO V magnetic cores which are one of the most powerful permanent magnet alloys available. Offered in many shapes from round, octagonal, egg-shaped and more, these PTFE-coated Magnetic Stir Bars resist harsh chemicals and are resistant to scratching and high temperatures. There are several measures that should be noticed to increase the life span of magnetic stir bars. First, stir bars should be stored in pairs to maintain magnetic strength. Stir bars should not be stored in a random mass or dropped on a hard surface especially steel. PTFE thickness accounts for 18% of stir bar diameter.
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  57. The Microflex® Difference in Glove Sizing

    The Microflex® Difference in Glove Sizing

    “It fits like a glove…” How many times have we heard this phrase? The fit and feel of our gloves are vitally important to Microflex and our customers. Our on-site Laboratory monitors various glove dimensions including weight, length, palm width, cuff thickness, palm thickness and fingertip thickness, to ensure our gloves meet expectations in these areas. The most important dimensions in terms of fit, feel and sizing for the glove industry are length, palm width and thickness. These characteristics when examined comprehensively give us the best picture of the true size of a glove.
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  58. Properties of Glassware

    Properties of Glassware

    Laboratory glassware is produced from hundreds of commercial glasses, but by far the low expansion borosilicate glasses are the most ideal for most laboratory applications. Because of their low coefficient of expansion and their high resistance to chemical attack, borosilicate lab glassware is used to manufacture such lab items as beakers, flasks, kettles, test tubes, ground joints and other scientific products. With proper care, they will withstand nearly all temperatures used in normal laboratory use.
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  59. Cleaning Methods for Laboratory Glassware

    Cleaning Methods for Laboratory Glassware

    The manufacturers of laboratory glassware such as Corning, the manufacturer of Pyrex laboratory glassware, may recommend a wide variety of cleaning solutions which may include biodegradable phosphate-free and chromium-free formulations. These will be available for purchase through many laboratory supply companies. Instructions for using these solutions should be read and closely followed.
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  60. Autoclaving Laboratory Glassware

    Autoclaving Laboratory Glassware

    Autoclaves are widely used to sterilize instruments, glassware and plasticware, solutions and media and to decontaminate biological wastes. Because of the physical hazards (e.g., heat, steam and pressure) associated with autoclaving, extra care ust be taken to ensure their safe use. Each autoclave has unique characteristics and operating requirements. Review and understand the owner’s manual before using any autoclave for the first time and as needed thereafter. Also follow all of your institution’s safety regulations for autoclaving.
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  61. Certificate of Calibration for Serialized Class A Glass - Example

    Certificate of Calibration for Serialized Class A Glass - Example

    CALIBRATION CERTIFICATE (Glassco Calibration Laboratory ISO 9001:2000 Certified) (USP-STANDARD) CERTIFICATE NO.: GLASSCO/10/07-02/508 CRF. DATE: 01/07/2010 CAL. REPORT NO.: 10/07-02 CUSTOMER: UN1-3996 TEST METHOD: GRAVIMETRIC METHOD
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  62. Distillation Glossary of Terms

    Distillation Glossary of Terms

    Distilland: The material in a distillation apparatus that is to be distilled. Distillate: The material in a distillation apparatus that is collected in the receiver. Distillation: The separation of a liquid mixture into its components on the basis of differences in boiling points. The process in which components of a mixture are separated by boiling away the more volitile liquid.
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  63. How to Calibrate Balances and Scales

    How to Calibrate Balances and Scales

    Why does my Balance need Calibration? Many people have questions concerning whether or not a balance or scale needs to be calibrated. The short answer is Yes! Scales and balances, in fact all modern instrumentation, need to be calibrated to ensure that they are in compliance with the specifications quoted. Having said that, how often to calibrate is more vexing to establish.
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  64. What Does "Fast Count" On My Scale or Balance Mean?

    What Does "Fast Count" On My Scale or Balance Mean?

    What Does “Fast Count” On My Scale or Balance Mean? Counting scales are often used for inventory control. They are therefore often used by staff who have not been trained in the scale’s operation.
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  65. What Does Linearity Mean in a Balance or Scale?

    What Does Linearity Mean in a Balance or Scale?

    “I often see linearity quoted as part of a balance or scale specification, but what does it mean to me?” Balances and scales are very precise instruments and like all instruments, they perform within stated parameters. Other examples of these parameters will be dealt with in other sections, but for now we will concentrate on Linearity.
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  66. The Importance of Environment When Using a Balance

    The Importance of Environment When Using a Balance

    The environment surrounding a balance is vital if you are to maintain the manufacturers stated performance ratings. Really, the manufacturer doesn’t matter in this regard, as a bad environment will adversely affect any balance. There are many influences to consider and to remove, as far as is possible, from the area surrounding the balance.
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  67. Vibra Tuning Fork vs. Monobloc

    Vibra Tuning Fork vs. Monobloc

    The Vibra® tuning fork sensor utilized in the Intelligent-Lab HT, AJ and SJ models is a unique method of obtaining the weight result in balances.
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  68. What is the Minimum Load of a Balance?

    What is the Minimum Load of a Balance?

    This is a subject that really gets people confused. If a balance reads in 0.001 g (milligram) , then why did the manufacturers put “Minimum Load” on the data sheet at several milligrams. Why not a milligram?
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  69. Archimedes' Principle and Density Determination

    Archimedes' Principle and Density Determination

    Archimedes’ Principle aids in the determination of density by providing a convenient and accurate method for determining the volume of an irregularly shaped object, like a rock. This method is quite commonly used in the construction industry. It is known also as Hydrostatic Weighing.
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  70. Default Image

    Hazardous Chemical Information

    U.S. Hotlines Chemical Transportations Emergency Center (CHEMTREC)   1-800-424-9300 National Institute Of Occupational Safety And Health (NIOSH) (Technical Information Source)   1-800-356-4674 National Response Center (Report Spills, Chemical Releases, Radiological Incidents)   1-800-848-6946 Poison Control Center   1-800-848-6946 Substance Identification (Identify Chemical Substances By CAS Number Or Name)   1-800-848-6538
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  71. Glossary of Common Chemical Names

    Glossary of Common Chemical Names

    Archaic or Common Name Current Technical Name   Archaic or Common Name Current Technical Name   Acid of sugar Oxalic acid.   Indian red Ferric oxide. Ackey Nitric acid.   Isinglass Agar-agar, gelatine. Alum or Alum flower or Alum meal Potassium aluminum sulfate.   Jewellers' rouge Ferric oxide. Antichlor Sodium thiosulfate.   Lampblack Crude form of carbon. Antimony black Antimony trisulfide.   Lead peroxide Lead dioxide.
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  72. Chemical Grades

    Chemical Grades

    USP, NF and FCC—Chemicals that conform to the requirements of the United States Pharmacopeia (USP), the National Formulary (NF), and the Food Chemicals Codex (FCC). These products are regulated by the Food and Drug Administration. All meet the requirements necessary for their use in pharmaceutical processing and prescription compounding (USP and NF) and for use in food processing operations (FCC). Purified—Chemicals of good quality where there are no official standards or compendia, or in some cases, that meet the requirements of former compendia articles. Practical—Chemicals of sufficiently high quality for use in diverse applications. Some products may contain intermediates, isomers, or homologs. Technical—Chemicals of selected commercial quality, useful in some applications.
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  73. Lab Armor Chill Bucket

    Lab Armor Chill Bucket

    The essence of the Chill Bucket. WATERLESS SOLUTIONS THAT PROTECT YOUR LAB WORK The Chill Bucket™ makes it easy to run your experiments without risking contamination from wet ice. Now you can cool everything ice-free — Lab Armor Beads power the new Chill Bucket. From 4 ºC to -20 ºC, the Chill Bucket delivers up to 4 hours of constant cooling on one ice pack or with a handful of dry ice pellets. Every Chill Bucket Kit includes a durable polyurethane laboratory bucket  and lid, two gel packs, and a mesh sack  filled with 2 liters of metallic thermal beads. Essentially, you get a completely  reinvented ice bucket. The Chill Bucket™ gives you amazing new ways to cool samples while keeping them dry and contamination-free. Its so cool, you’ll never use ice again.  
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  74. Lab Armor Bead Blocks

    Lab Armor Bead Blocks

    The next generation of dry baths. In full color. We are replacing old things in the lab again. The new Bead Block is no ordinary dry bath heat block. It's not designed around a solid block, but around Lab Armor beads for better flexibility and performance. Available in both single and double block sizes.  
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  75. Lab Armor Drytemp

    Lab Armor Drytemp

      The DryTemp, Bead Blocks and Beads combine for space efficiency. The DryTemp digital dry bath offers control over both temperature and time, eliminating the need for an external thermometer or timer. Using the Lab Armor Bead Blocks filled with Beads in the DryTemp instead of the aluminum drilled blocks allows for testing of any size tube. The DryTemp has a built-in user recalibration function, to guarantee long term temperature accuracy.
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  76. Lab Armor® Products

    Lab Armor® Products

    Labs are better waterless. No more contamination. Ruined experiments. Lost materials. Hassles. Lab Armor® Beads are eco-friendly and low-maintenance metallic beads that replace water in existing water baths, aluminum blocks in dry baths and even ice in ice buckets. The innovative Lab Armor Beads can also be used in containers placed in ovens and incubators to replace sample racks.  
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  77. Lab Armor® Bead Bath

    Lab Armor® Bead Bath

    All of the built-in features on the Bead Bath were designed from the ground up to take advantage of Lab Armor Beads and the advanced capabilities of the Bead Bath. And they delivery exceptional temperature uniformity up to 80ºC. So you can do things with these baths that you can't do with your typical bead-filled water bath.  
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  78. Lab Armor® Beads

    Lab Armor® Beads

    Lab Armor® Beads, by their design, provide a concurrent thermal and antimicrobial activity that efficiently shields the lab and personnel from invading organisms while thermally heating or cooling like water in any standard water bath, heat block or ice bucket. Lab Armor Beads keep lab water baths dry and protected from water-borne microbial contaminants.Don't contaminate your lab's bath with water  
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  79. Serum Inactivation in Bead Baths

    Serum Inactivation in Bead Baths

    Symptoms Serum media bottles take longer to bring to temperature in Lab Armor Beads than in a standard water bath. In direct comparison to water, it takes Beads approximately 2-3x longer to warm a 500 ml media bottle. To troubleshoot these issues, follow the recommendations below.   
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  80. Thawing Cryo-vials in a Bead Bath

    Thawing Cryo-vials in a Bead Bath

    Symptoms When thawing cryopreserved cells, time is the most important factor. In general, cells must thaw quickly. As a culture freezes, ice is formed. Upon thawing, these ice shards can puncture cells, thus decreasing the viable cell dens   Problem Bead Baths - Cryo-vials thaw more slowly in a Bead Bath than in a water bath. This can potentially compromise cell viability. Water Baths - When using a water bath, cryo-vials are typically dipped into 37 ºC water and gently shaken about. During this process, water can wick underneath the cryo-vial's lid and exposure the sample to water-borne biological and chemical contaminants.  
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  81. Compatibility of Lab Armor Beads with Non-Lab Armor Baths

    Compatibility of Lab Armor Beads with Non-Lab Armor Baths

    Symptoms When converting a third party water bath into a bead bath by adding Lab Armor Beads, the water bath must heat to the set temperature and maintain a constant temperature. The designs of some baths make them incompatible for use with Lab Armor Beads. Some customers may experiences issues when trying to use Lab Armor Beads in their old water baths. To troubleshoot these issues, follow the recommendations below.
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