Multi-layer gas sampling bags, PP valve (4.76mm), 1L Back Catalog number: HEDMBT71_1L 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 H3-AXABC HiSorb probe, PDMS/DVB, inert, short version, pk 6 Price on request HEDPOL32_2L Polyester gas sampling bag with PTFE dual-valve, 2L Price on request