Description
Clear Wheaton Sample Vials with Rubber Lined Screw Cap
Solid top black phenolic caps with 14B white rubber liner are attached.
The vials are manufactured from Wheaton 33 low extractable borosilicate glass (meets ASTM Type I Class A and USP Type I Standards) to protect against changes in pH and maintain purity of contents.
They have uniform sidewall and bottom thicknesses, are lightweight and have excellent strength and clarity.
Storage down to -40 C.
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Typical Elemental Extraction Data of Wheaton 33 Type I Glass (ppm)
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| element: | Si | Al | Na | K | Ca | Mg | Ba |
| Type 1 | <1 | <0.003 | 0.3 to 0.5 | <<0.05 | <<0.05 | <0.05 | <<0.05 |
