PYREX® Dropping Funnel, cylindrical, graduated, with PTFE stopcock key, 50mL
Complies with ISO 4800 Type 4, Manufactured from 3.3 expansion borosilicate glass complying with ISO 3585 (ASTM E-438 Type 1 Class A), With double graduated scale in white enamel printing showing approximate volume contained/dispensed, With interchangeable PTFE stopcock key, Supplied with both a polyethylene and glass stopper