grey cap inserts for cryoforge cryogenic vials only

Organizing cryogenic samples is easy with these brightly colored cryovial inserts that work with our CryoForge brand of polypropylene cryovials. Colored cap inserts work with BOTH internal and external thread CryoForge cryovials. The cap surface is smooth and offers a small space for notation. One end of the cap contains a divot to be used if removal of the cryovial cap insert is needed. Sold in packs of 500 cryovial caps.