These clear glass jars come with an open-top polypropylene cap and PTFE liner.

All containers meet one of three levels of pre-cleaning. Level III indicates that containers have not received an EPA washing treatment. Level II indicates that each case of containers has been custody-sealed and lot number-labeled for traceability to the enclosed Statement of Compliance. Level I pre-cleaning is the same as Level II, but instead of a Statement of Compliance, a Certificate of Analysis is provided indicating that the containers received full EPA quality assurance treatment.