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Clear or amber
20 mL sample vials
24-400 screw cap
Clear vials are manufactured from Wheaton 33 low extractable borosilicate glass that meets ASTM Type 1 Class A and USP Type 1 standards. Amber sample vials are manufactured from Wheaton 320 amber glass that meets ASTM Type 1 Class B and USP Type 1 standards to protect light sensitive samples and maintain purity of contents. The white polypropylene open top screw cap has a specially designed septum of 5 mils of Teflon facing 0.120 mils of silicone. The polypropylene is glass-filled to provide extra chemical and heat resistance compared to standard polypropylene. The septa are bonded to the cap providing a permanent connection.
Description Amber Open Top Sample Vials In Lab File, 20 ml
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