Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: HEDPOL32_2L Availability: In the manufacturer's stock Price on request - + Recommended U-CENKIT Starter Kit: Centri booster pack (DiffLok caps and O-rings) Price on request P-CP001 VOC-Mole cap assembly,pk 1 Price on request C-TDKIT-01 Essential TD Starter Kit Price on request