Pyrex® Automatic Burette, Class AS, Schellbach stripe, with PTFE key and intermediate stopcock, 10 mL

Complies with ISO 385 and DIN 12700, Manufactured from borosilicate glass 3.3., With automatic zero facility, Intermediate stopcock facilitates easy drainage of liquid back into reservoir, Blue enamel graduations with Schellbach stripe, Schellbach burette tube with vertical white stripe and central blue ribbon - facilitates accurate reading of the meniscus - exact position of the meniscus is clearly defined where the blue ribbon splits into a wide and narrow band, 1.5mm bore PTFE key stopcock, All automatic burettes feature a Quickfit® cone NS 29/32.