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 M-SPC15-250 Collar spacer, alum 15mm, for M-CTE250I,pk 4 Price on request M-DSK15-250 Spacer disc, alum, 1.5mm, for M-CTE250I,pk 24 Price on request FEP32_2L FEP gas sampling bag with PTFE dual-valve, 2L Price on request