Inserts, PTFE,pk 6 Back Catalog number: M-TSTIN Manufacturer: MARKES INTERNATIONAL LIMITED Availability: In the manufacturer's stock Price on request - + Recommended TDL31_2L Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Price on request C-TAGKT TubeTAG starter kit (for SS tubes) Price on request SERZ-1097 Spare tube assembly, ACTI-VOC Price on request