EPA vials has been used during solid phase microextraction (SPME) of odors in drinking water for analysis by GC/MS.
Each of the vials is cleaned according to US EPA Protocol B: The cleaning procedure is as follows:
1. Wash containers in hot water using laboratory grade non-phosphate detergent.
2. Rinse three times with copious amounts of tap water to remove detergent.
3. Rinse three times with ASTM Type I organic-free water.
4. Oven-dry containers.
5. Allow containers to cool to room temperature in an enclosed contaminant-free environment.
6. Cap the containers.
After being cleaned these vials are assembled with the following materials: Type 1 borosilicate glass, PTFE/silicone septa, and a polypropylene cap. The vials are available in either clear or amber glass. All of the vials are packaged with an open top cap and a tan/white PTFE/silicone septa.
The 40 mL EPA vials are supplied with a Certificate of Analysis and a package of labels to use to identify the contents of your sample. The package of vials is shrink wrapped after cleaning to make sure that the vials arrive to you as clean as possible.