| GENERAL CHARACTERISTICS ITEM DESCRIPTION | 220 CUBIC FEET PER CYLINDER; 21 PORM 2 PERCENT OXYGEN BY VOLUME,79 PORM 2 PERCENT NITROGEN BY VOLUME,500 PPM MAXIMUM CARBON DIOXIDE,10 PPM MAXIMUM WATER,NASA OWNED CYLINDER DOT ORICC DESIGNATION 3A1800,SIZE 9 INCH OUTSIDE DIAMETER,5 INCHES HIGH,COLOR CODE IN ACCORDANCE WITH MIL-STD 101B IS BLACK,GRREN,BLACK,BLACK WITH DECAL STATING CONTENTS,THE METHOD OF ANALYSIS SHALL BE STANDARD INDUSTRIAL PROCEDURES FOR ZERO AIR,VALVE DATA,VALVE NO 346 |