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 M-MCHOR O-Ring, micro-chamber pan seal, for M-CTE120I,pk 6 Price on request U-T8CUS-2S cust packed cold trap, UNITY 2/xr and TD-100/xr Price on request U-TO15-KXR Focusing trap, Trace TO-15, for UNITY-xr with Kori-xr Price on request