Simport Cryovial,O-Ring,S/Stand,Int.Thread,4ml, 1000 Items SIMPT311-4A

Simport Cryovial® Internal Thread, Self-Standing with Silicon Washer Seal, 4 ml The white washer seal fits tightly on top of the tube opening to ensure a leakproof seal Made of medical-grade, non-cytotoxic, USP class VI, and FDA compliant polypropylene BSE/TSE BPA, phthalate, Latex, and Heavy metal-free Sterilized by Gamma radiation and Autoclavable Free of RNase, DNase, Pyrogen, and DNA