ISO 2749:1973
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Urea for industrial use — Measurement of the pH of a solution of urea of conventional concentration (100 g/l) — Potentiometric method
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
05-10-2019
English, French
11-01-1973
Describes the measurement of a solution of a test sample by means of a pH meter fitted with one glass electrode and one calomel electrode. The pH meter has a sensitivity of 0.05 pH units. The calibration of the pH meter is carried out at (20 0.5) 0C by means of buffer solutions. The method has also been approved by the IUPAC.
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