VOA/TOC Vials, 40mL, 100/PK - Clear Glass - ASTM/USP Type I, Class B - PTFE Septa

This 100-pack contains clear 40mL vials certified for volatile organic analysis and total organic carbon sampling, supplied preassembled with caps and shrink wrapped into trays. Each vial is made from 51 expansion borosilicate glass conforming to USP Type I and ASTM E438 Type I, Class B requirements. Type I borosilicate is highly resistant to leaching, so the container does not contribute contaminants to a sample being analyzed at trace concentrations. The caps are high purity polypropylene with silicone and PTFE septa. The PTFE face contacts the sample, providing a chemically inert seal that holds volatiles in and prevents the septum from contributing organic carbon. Flat bottoms give stability during handling and analysis. Each vial measures 3.75 inches (95mm) tall with an outer diameter of 1.1 inches (28mm). Preassembly and shrink wrapping keep the vials clean until use.