International Organization for Standardization (ISO)
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ISO 1842:1991
Scope
Specifies a potentiometric method of measuring the pH. Describes the principle, the preparation of the test sample, the test procedure, the expression of results, and the contents of the test report. This second edition cancels and replaces the first edition (1975).
ISO 1842:1991 history
1991ISO 1842:1991 Fruit and vegetable products; determination of pH
1975ISO 1842:1975 Fruit and vegetable products; Determination of pH