Glass amber jars are for use with UV-light sensitive samples. I-CHEM Certified* 200 and 300 series bottles are processed to meet or exceed “US EPA Specifications and Guidance for Contaminent-Free Sample Containers.” I-CHEM Certified 300 series bottles include a Certificate of Analysis with a bar-code production number in every case. Each bottle in the 300 series has a bar-code label for absolute traceability and is for use with automated sample tracking systems. I-CHEM 100 Series bottles, for general use, are not processed or certified. Ordering Information: Supplied with Teflon* resin-lined polypropylene closures attached. | 
