Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: HEDTDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended C-TO17KIT TO-17 Starter Kit Price on request U-CENKIT Starter Kit: Centri booster pack (DiffLok caps and O-rings) Price on request RMK-0026 Routine Maintenance Kit: Kori-xr Price on request