Special rubber washer is supplied with each pipet and is used to support the pipet in the neck of the test bottle

·         Scale is permanent brown stain

·         Complies with requirements of APHA/Standard Methods for Analysis of Dairy Products, American Public Health Association (APHA)

·         Designed from ASTM Specification E1043, Type VI requirements

·         Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements