Thermo Scientific I-Chem Certified™ 200 and 300 series vials meet or exceed U.S. EPA “Specifications and Guidance for Contaminant-Free Sample Containers,” and are provided with sample-analysis labels, unattached. Thermo Scientific I-Chem Certified 300 series vials include a Certificate of Analysis with a bar code production number in every case. Each vial in the 300 series has a bar code label for absolute traceability, and is for use with automated or manual sample tracking systems. Thermo Scientific I-Chem 100 series vials are made from the same high-quality materials as Thermo Scientific IChem Certified 200 and 300 series, but are not processed and do not include a certificate or container labels. Certificates of Analysis are available by request for 200 series vials and economy packs, but unavailable for the 100 series vials. Ordering Information: Available with solid-top fluoropolymer resin-lined screw caps or open-top caps with fluoropolymer resin/silicone septa. The 200 and 300 series vials are packaged in Field-to-Lab tray boxes with partitions.