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 U-T11GPC-2S Unity 2/TD-100 Cold Trap carbon C4/5-C30/32 Price on request M-TICAP Tube interface cap for removable lid,pk 6 Price on request C-HSINS10-6 Agitator spacer for vials, 20mL to 10mL, pk/6 Price on request