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 HEDPOL32_2L Polyester gas sampling bag with PTFE dual-valve, 2L Price on request M-MCAL50 Disposable dish, alum, 50mL,pk100 Price on request