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 U-T13DHS-2S DHS application cold trap, UNITY 2/xr andTD-100/xr Price on request RMK-0005 RoutMainten kit - TT24-7 Price on request P-CP010 VOC-Mole cap assembly,pk10 Price on request