Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: POL32_2L 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 C-EZVOCAK Easy-VOC accessory pack Price on request U-COV1517 Spare O-ring, brown, for POD sampler (diffusive body), pk 20 Price on request