Pyrex® Auto Zero Burette, Sofnol, Class B, with Rotaflo® stopcock, 10mL

Complies with ISO 385, Manufactured from borosilicate glass 3.3, With PTFE Rotaflo® Stopcock for grease-free performance and fine drop-wise control, 3mm bore PTFE key, Graduations in white enamel, Burettes and bottles should be ordered separately, Easy filling and automatic zero?- Squeeze the polyethylene bottle to fill the burette?- Release pressure to allow excess liquid to drain back into bottle and set the burette to zero