Multi-layer gas sampling bags, PP valve (4.76mm), 1L Back Catalog number: HEDMBT71_1L Availability: In the manufacturer's stock Price on request - + Recommended M-DSKPF Sample disc, 1.0mm thickness, PTFE,pk 6 Price on request SERZ-1097 Spare tube assembly, ACTI-VOC Price on request HEDNDV61_50L New Devex Sampling Bag with ABS Valve & Septum Fitting, 50L Price on request