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 HEDPOL32_5L Polyester gas sampling bag with PTFE dual-valve, 5L Price on request C-HSINS10-6 Agitator spacer for vials, 20mL to 10mL, pk/6 Price on request P-CP001 VOC-Mole cap assembly,pk 1 Price on request