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 HEDTDLC31Z_1.6L Tedlar® PVF Sampling Bags PTFE On/Off valve, 1,6L Price on request U-T9TNX-2S Unity 2/TD-100 Cold trap, Tenax TA Price on request HEDPOL32_2L Polyester gas sampling bag with PTFE dual-valve, 2L Price on request