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 HEDDEV71_5L Devex Gas sampling bags 5L, PP screw cap valve, 3/16'' OD (4.76mm) Price on request U-T9TNX-2S Unity 2/TD-100 Cold trap, Tenax TA Price on request T-2HD CW agents (in particular HD) cold trap, TT24-7 Price on request