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 package of vials is shrink wrapped after cleaning to make sure that the vials arrive to you as clean as possible.The 2-22mL vials are supplied with a Certificate of Conformity and a package of l00 labels.
Other Notes: The 2-22 mL vials are supplied with a Certificate of Conformity and a package of 100 labels.