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 C-HSINS2-4 Spacer for Agitator, to accommodate for 2mL vials, pk 4 Price on request HEDMBT71_1L Multi-layer gas sampling bags, PP valve (4.76mm), 1L Price on request SERZ-1097 Spare tube assembly, ACTI-VOC Price on request