Tube gas sampling 150ml nozzle (GL14), septum Back Catalog number: OST-201-3424 Availability: In the manufacturer's stock Price on request - + Recommended M-MCHOR250 O-Ring, micro-chamber pan seal,pk 4 Price on request OST-201-0246 Screw caps for screwthread tubes GL14, bore 8mm Price on request C-TDKIT-01 Essential TD Starter Kit Price on request