Tedlar PVF Gas Sampling Bag with PP valve, 6L, 3/16'' OD (4.76mm) Back Catalog number: HEDTDL71_6L Availability: In the manufacturer's stock Price on request - + Recommended M-SPC05-250 Collar spacer, alum 5mm, for M-CTE250I,pk 4 Price on request P-00020 VOC-Mole assembly, 380mm,pk10 Price on request SERZ-1097 Spare tube assembly, ACTI-VOC Price on request