Tedlar® PVF Sampling Bags PTFE On/Off valve, 1,6L Back Catalog number: HEDTDLC31Z_1.6L Availability: In the manufacturer's stock Price on request - + Recommended RMK-0020 Routine Maintenance Kit: Tube conditioner (TC-20) Price on request C-TAGKT TubeTAG starter kit (for SS tubes) Price on request HEDNDV32_2L New DEVEX gas sampling bags with PTFE dual-valve, 2L Price on request