This standard describes a dynamic method for the preparation of gas mixtures for calibration by the permeation technique. By this method, concentrations between 10~9 and 10-6 (by volume) can be prepared with a production gap of approximately + 3?. Sulfur dioxide, nitrogen dioxide, hydrogen sulphide, chlorine, ammonia, propane, butane and vinyl chloride are typical products, which can be, by this technique , prepare gas mixtures for calibration.
NBN T 97-104-1979 history
1979NBN T 97-104-1979 Preparation of gas mixtures for calibratlon using permeation tubes