Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: POL32_2L Availability: In the manufacturer's stock Price on request - + Recommended U-T20PAM-2S Focusing trap, Photochemical Assessment Monitoring Stations (PAMS), for UNITY-xr, TD100-xr, Centri Price on request C-TAGKT TubeTAG starter kit (for SS tubes) Price on request C-HSPVLP-6 HiSorb Septum Plug, pk 6 Price on request