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 OST-201-3424 Tube gas sampling 150ml nozzle (GL14), septum Price on request T-2HD CW agents (in particular HD) cold trap, TT24-7 Price on request U-T22117-2S Focusing trap, China Air 117, for for UNITY-xr, TD100-xr, Centri Price on request