Tube gas sampling 350, nozzle (GL14), septum Back Catalog number: OST-201-3421 Availability: In the manufacturer's stock Price on request - + Recommended C-TO17KIT TO-17 Starter Kit Price on request U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request C-HSPH HiSorb handle, for manual probe extraction Price on request