Inserts, PTFE,pk 6 Back Catalog number: M-TSTIN Manufacturer: MARKES INTERNATIONAL LIMITED Availability: In the manufacturer's stock Price on request - + Recommended TDL32_5L Tedlar PVF Gas Sampling Bag with PTFE dual-valve, 5L Price on request M-MCTOPI Removable lids for M-CTE120I, inert,pk 6 Price on request TDL71_10L Tedlar PVF Gas Sampling Bag with PP valve, 10L, 3/16'' OD (4.76mm) Price on request