1. 40ml Ultra clean EPA VOA vial are suitable to all TOC instruments, including Sievers, Shimadzu, OI Analytical, and Teledyne-Tekmar. 2. Ultra low TOC< 10ppb 3. Purge&Trap, GC-MS certified 4. Teflon lined caps and protective dust covers. 5. Superior vial-to-vial consistency. 3. Company Profile