Tedlar® PVF Sampling Bags PTFE On/Off valve, 1,6L Back Catalog number: HEDTDLC31Z_1.6L Availability: In the manufacturer's stock Price on request - + Recommended P-CPS20 Dowty seals, for VOC-Mole cap assembly,pk 20 Price on request C-POD-KIT04 POD Starter kit: Carbograph 2TD Price on request U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request