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 C-POD-B010 Spare Diffusive Body, for POD sampler, pk 10 Price on request U-TO15-KXR Focusing trap, Trace TO-15, for UNITY-xr with Kori-xr Price on request M-MCHOR250 O-Ring, micro-chamber pan seal,pk 4 Price on request