The top of this Class A buret is funnel shaped to accommodate a rubber stopper and glass tubing to fill from a delivery tip via suction. Made of borosilicate glass with durable colored scale, both sizes have 2mm stopcock with PTFE plug.

For student use or industrial test methods requiring medium accuracy Graduated in 0.1 mL; central filling tube zeroes buret as excess titrant drains back into reservoir Self-standing, supported by filling tube which passes through rubber stopper of reservoir bottle Rubber bulb with…

Made of borosilicate glass, these precision type, Class A burets have a straight 2mm PTFE stopcock. Calibration is in compliance with ASTM E 694 specifications. Reference No. ASTM E 287 Laboratory Glass Graduated Burets