Tube gas sampling 350, nozzle (GL14), septum Back Catalog number: OST-201-3421 Availability: In the manufacturer's stock Price on request - + Recommended U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request U-T3ATX-2S Air Toxics, C2 - C14 (TO-14), cold trap Price on request P-FORMR Brass impact former Price on request