Tube gas sampling 350, nozzle (GL14), septum Back Catalog number: OST-201-3421 Availability: In the manufacturer's stock Price on request - + Recommended U-COV03 O-Ring, Size 003, pk 10 Price on request U-T14H2S-2S H2S cold trap, UNITY 2/xr Price on request HEDTDLC-S Repalcement septum for Tedlar bag TDLC31Z Price on request