Glassware

  1. 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.
    Read More
  2. 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:
    Read More
  3. 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:
    Read More
  4. Default Image

    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.
    Read More
  5. Default Image

    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.
    Read More
  6. 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.
    Read More
  7. 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.
    Read More
  8. 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.
    Read More
  9. 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
    Read More
  10. 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.
    Read More

Request A Quote For