Inserts, PTFE,pk 6 Back Catalog number: M-TSTIN Manufacturer: MARKES INTERNATIONAL LIMITED Availability: In the manufacturer's stock Price on request - + Recommended U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request TDL71_5L Tedlar PVF Gas Sampling Bag with PP valve, 5L, 3/16'' OD (4.76mm) Price on request RMK-0026 Routine Maintenance Kit: Kori-xr Price on request