This standard establis es the dew point method using the Alnor meter, to determine the water vapor content in the nitrogen gas sample, with a precis on of + 2°C, in the Quality Control of Nitrogen obtained by liquefying. tion and fractional dis illation of air.
NC 24-65-1986 history
1986NC 24-65-1986 Inorganic Chemical Products Nitrogen. Determination of Water Vapor Content. Aerial Water Point Method