Multi-layer gas sampling bags, PP valve (4.76mm), 1L Back Catalog number: MBT71_1L Availability: In the manufacturer's stock Price on request - + Recommended U-T8CUS-2S cust packed cold trap, UNITY 2/xr and TD-100/xr Price on request M-SPGSC-250 Adjustable sprung spacer, for M-CTE250I,pk 4 Price on request FEP32_5L FEP gas sampling bag with PTFE dual-valve, 5L Price on request