35 mL Teflon PFA Liner for 35 mL Pyrex vessels. Reusable liners for use with Pyrex vials. Provides a Teflon PFA wetted surface. MUST BE USED WITH A PYREX VIAL. WILL NOT WORK WITH QUARTZ VIAL. (Not compatible with Discover Benchmate, Labmate, S-Class, or SP.)