Tedlar PVF Gas Sampling Bag with PP valve, 6L, 3/16'' OD (4.76mm)

Devex Gas sampling bags 10L, PP screw cap valve, 3/16'' OD (4.76mm)

Polyester gas sampling bag with PTFE dual-valve, 5L

Tedlar® PVF Sampling Bags PTFE On/Off valve, 1,6L