Flasks come with blue polypropylene caps and clear pour rings · Autoclavable KimCote® safety coating reduces the hazards of shattered glass and leakage of toxic or corrosive chemicals · Marking spots and scales are durable white ceramic enamel · Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements | |