Polyester gas sampling bag with PTFE dual-valve, 5L Back Catalog number: POL32_5L Availability: In the manufacturer's stock Price on request - + Recommended U-TO15-KXR Focusing trap, Trace TO-15, for UNITY-xr with Kori-xr Price on request MBT71_1L Multi-layer gas sampling bags, PP valve (4.76mm), 1L Price on request U-T2GPH-2S UNITY 2 & TD-100 Cold trap general purpose hydrop Price on request