Multi-layer gas sampling bags, PP valve (4.76mm), 1L Back Catalog number: MBT71_1L Availability: In the manufacturer's stock Price on request - + Recommended M-SPC15-120 Collar spacer, alum 15mm, for M-CTE120I,pk 6 Price on request U-T11GPC-2S Unity 2/TD-100 Cold Trap carbon C4/5-C30/32 Price on request U-COV35 O-Ring, low-emission, size 035,pk10 Price on request