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-201-0246 Screw caps for screwthread tubes GL14, bore 8mm Price on request M-DSK15-250 Spacer disc, alum, 1.5mm, for M-CTE250I,pk 24 Price on request 1234 BALLOONS FOR GAS SAMPLING, 5Liters Price on request