Corning Pyrex 250 ml Dispensing Burets, Colored Scale, With Straight Bore Product Standard Ptfe Stopcock

These 250 mL PYREX burets are suitable for use in school and institutional laboratories not requiring the accuracy of our Class A models. They are used when dispensing large volumes of liquids rapidly and accurately. Made from close tolerance, accurate bore tubing with uniform walls, these burets have a permanently colored scale. Tips are carefully drawn and ground to reduce chipping. Provided with a Polytetrafluorethylene (PTFE) stopcock plug to reduce freezing and eliminate lubricant contamination. The smooth micro-finish of the stopcock barrel assures a precision fit and optimum leak-resistant performance. For replacement stopcock plug only, see No. 7681.