ISO 1550:1973
Potassium hydroxide for industrial use; Determination of sodium content; Flame emission spectrophotometric method
- Standard No.
- ISO 1550:1973
- Release Date
- 1973
- Published By
- International Organization for Standardization (ISO)
- Status
- 2002-05
- Latest
- ISO 1550:1973
- Scope
- The method is applicable to products having sodium contents greater than 0.01 % (m/m). The principle consists in the dissolution of a test portion, followed by acidification to ph value 1. Atomization of the obtained solution in the burner of a flame spectrophotometer. Measurement of the intensity of the radiation emitted at 589 nm; comparison with the intensity obtained for standard sodium chloride solutions, the acidity and potassium chloride content of which are equivalent to that of the test solution. - Cancels and replaces ISO Recommendation R 1550-1970.
ISO 1550:1973 history
- 1973 ISO 1550:1973 Potassium hydroxide for industrial use; Determination of sodium content; Flame emission spectrophotometric method
