Category of Glass Sample Vial
| Cork Type | There are screw thread, clip, and jaw (necessarily matching responsible to use). |
| Appearance Color | Transparent and brown( to keep out of sunlight) is sorted specifically. |
| Volume | Products have different volumes – 2ml, 10 and 20, 40ml. |
| Caliber | 8mm, 9mm(NO. 8-425 or 9-425 are all standard screwed mouth), 11mm(crimp or bayonet) |
| Writing Blank | If the blank area for writing exists is one classification criteria. |
| Glass Material | USP1 Borosilicate glass(a bit expensive than home-made one) It would be better if the transparent color is 5.0 but 7.0. |
Septa & Cap
| Screw Cover Gasket | PTFE /silica gel/PTFE, PTFE /silica gel Cap color: black-8mm; blue-9mm Septa color: white- silica gel; red or blue-PTFE |
| Crimp Cover Gasket | With better sealing effect, this gasket is usually applied to Gas Chromatogram or long-term sample storage. |
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