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 P-CP010 VOC-Mole cap assembly,pk10 Price on request M-SPC15-250 Collar spacer, alum 15mm, for M-CTE250I,pk 4 Price on request U-T19PAH-2S PAH cold trap, UNITY 2/xr and TD-100/xr Price on request