Calibrated for no blow-out
· Specially designed rubber washer is supplied with each pipet and is used to support the pipet in the neck of the test bottle
· Grooves on the outer surface of the washer allow air displaced by incoming milk to escape freely
· Scale is permanent brown stain
· Designed from ASTM Specification E1043, Type II B requirements
· Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E-438, Type I, Class A requirements