Description General description • Complies with ISO 385 and DIN 12700 • With automatic zero facility • White enamel graduations • 1.5mm bore PTFE key stopcock • Burettes and accessories should be ordered separately • Burettes manufactured from chemically resistant Pyrex borosilicate glass Simple operation • To fill burette apply a slight positive pressure to lower side-arm • To set zero, release pressure to allow excess liquid to siphon back into the bottle Legal Information PYREX is a registered trademark of Corning, Inc.