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 M-MCHSI Sample pans for M-CTE120I, inert,pk 6 Price on request 1235 BALLOONS FOR GAS SAMPLING, 8Liters Price on request HEDTDL31_2L Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Price on request