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 T-9GPC General purpose carbon cold trap, TT24-7 Price on request P-CPS20 Dowty seals, for VOC-Mole cap assembly,pk 20 Price on request M-MCAL50 Disposable dish, alum, 50mL,pk100 Price on request