Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: POL32_2L Availability: In the manufacturer's stock Price on request - + Recommended C-TDKIT-01 Essential TD Starter Kit Price on request P-CP020 O-Rings, 23mm × 3mm i.d.,pk 20 Price on request C-CL100 Penclips, pk100 Price on request