Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 5L Back Catalog number: HEDTDL31_5L Availability: In the manufacturer's stock Price on request - + Recommended T-2HD CW agents (in particular HD) cold trap, TT24-7 Price on request P-00040 VOC-Mole assembly, 830mm,pk10 Price on request C-HSPH HiSorb handle, for manual probe extraction Price on request