Borosilicate glass burette having PTFE key giving accurate and economical liquid dispensing. These burettes are mounted on a high density polyethylene screw cap (HDPE bottle). It works by squeezing the flexible polyethylene bottle which forces liquid into the burette, the built-in overflow automatically passes excess liquid back into reservoir (HDPE bottle).

• Packed complete with a reservoir bottle, rubber tubing with rubber squeeze bulb
• Precision ground tips assure uniform outflow
• Supplied with a chemically-resistant, self-lubricating PTFE stopcock plug
• Traceable to International Standards
• Supplied with a Certificate of Graduation Accuracy
• Easy-to-read durable enamel scale
• 2 mm bore size stopcock plug
• Manufactured and Calibrated to the ASTM Specifications E694 and E542
• Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements

Hempel Gas Buret, made of borosilicate glass, available in two sizes, 50mL and 100mL with subdivisions of 1/10 mL and 2/10 mL. It has a straight stem at the top and a bent 90° angle stem at the bottom.