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 OST-LENZ01320014 Screw caps for screwthread tubes GL14 Price on request C-HSPVLP-20 HiSorb septum plug, pk 20 Price on request C-KITME01-2S Basic material emissions starter kit Price on request