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 1970-0234 O-RING-234 For High Flow Damper Plate Price on request P-CP020 O-Rings, 23mm × 3mm i.d.,pk 20 Price on request RMK-0027 Routine Maintenance kit, tube based systems, no co Price on request