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 SERLFP-5002 Spare charger, ACTI-VOC Price on request M-CHCT-250 Calibration tool for M-CTE250I, pk 4 Price on request U-T17O3P-2S Ozone precursors cold trap, UNITY 2/xr and TD-100/ Price on request