Class A Graduated Burettes, PTFE Straight Bore Key Stopcock, Individually Certified

Each burette is calibrated "To Deliver" (TD, Ex) using advanced computer-controlled machinery to eliminate manual calibration variances. Featuring a premium, grease-free PTFE straight bore key stopcock, these instruments offer exceptionally smooth, drip-free control over liquid delivery without the risk of stopcock freezing or sample contamination. Each unit is individually serialized and includes a certificate of calibration confirming compliance with ISO and NABL accreditation guidelines.

Key Functional Benefits:

• Individually Certified Traceability: Every burette features an engraved, unique serial number traceable to NABL and ISO standard protocols, simplifying compliance with strict internal or external audits
• Grease-Free Liquid Delivery: The straight bore PTFE key stopcock requires zero grease or lubricants, keeping titrants pure and preventing the chemical fouling of analytical reactions
• Sustained Volumetric Settling Time: Calibrated with a mandatory 30-second fluid waiting time, allowing the liquid film on the glass wall to completely drain for an ultra-precise meniscus reading
• High-Contrast Graduation Markings: Sharp, durable amber graduation lines run along the precision-bore tube to ensure clear volumetric tracking and reduce parallax errors