Tedlar® PVF Sampling Bags PTFE On/Off valve, 1,6L Back Catalog number: TDLC31Z_1.6L Availability: In the manufacturer's stock Price on request - + Recommended 1235 BALLOONS FOR GAS SAMPLING, 8Liters Price on request U-COV1517 Spare O-ring, brown, for POD sampler (diffusive body), pk 20 Price on request C-POD-C010 Spare Cover, for POD sampler, pk 10 Price on request