Polyester gas sampling bag with PTFE dual-valve, 5L Back Catalog number: POL32_5L Availability: In the manufacturer's stock Price on request - + Recommended TDL71_6L Tedlar PVF Gas Sampling Bag with PP valve, 6L, 3/16'' OD (4.76mm) Price on request C-TDKIT-02 Essential Automated TD Starter Kit Price on request M-MCAL20 Disposable dish, alum, 20mL,pk100 Price on request