Gives the pressure and characteristics of nitrogen, compressed in oil-lubricated equipment. Is not intended to cover nitrogen f乺 use in oxygen systems. The gaseous nitrogen supply pressure shall ensure charging of aircraft systems up to 343 bar at 20 鳦. The minimum purity shall be 98,5 % by volume. It shall contain not more than a total of O,OO5 mg of oil vapour and particulate matter per cubic decimetre of nitrogen at 15 鳦 and 1 013 mbar.