I-CHEM Certified* 200 and 300 series glass 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-coded production number in every case. Each bottle in the 300 series has a bar-code label for absolute traceability. I-CHEM 100 Series bottles, for general use, are not processed or certified. Ordering Information: Available in clear or amber glass. Supplied with open-top polypropylene screw caps with 0.125" Teflon*/silicone septa. | 
