Wheaton 4mL Clear M-T Vial with PTFE/Rubber Liner - 13-425mm Cap, Pack of 40 - Ideal for Laboratory Sample Storage & Chemical Analysis

Clear sample vials have solid top black phenolic caps that are Teflon faced with 14B rubber liners. Cap Material is black phenolic and cap and liners are autoclavable. This sample vial and closure combination provides an extremely inert and chemically resistant environment for harsh, sensitive and reactive samples. The vial File provides a compact, readily accessible means of sample storage. The vials are stored in individual partitions within a Clear plastic case. The case is made from polystyrene with hinged lids and alphanumeric indexing. Foam inserts provide extra protection for the vials. They are manufactured from Wheaton 33 low extractable borosilicate glass, which meets ASTM Type I Class and USP Type I standards to protect ph. balance and sample integrity.