Tedlar® PVF Sampling Bags PTFE On/Off valve, 0,3L Back Catalog number: HEDTDLC31Z_0.3L Availability: In the manufacturer's stock Price on request - + Recommended 1970-0011-R O-RING -011 .301 ID X .070 W Each Price on request U-T5O3F-2S Ozone precursors/Freon cold trap Price on request M-MCTOP250I Removable lids for M-CTE250I, inert,pk 4 Price on request