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-MCHOR O-Ring, micro-chamber pan seal, for M-CTE120I,pk 6 Price on request M-DSK15-250 Spacer disc, alum, 1.5mm, for M-CTE250I,pk 24 Price on request C-HSPVLP-6 HiSorb Septum Plug, pk 6 Price on request