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sklademVydáno: 1976
ISO 1692:1976
ISO 1692:1976-Sodium and potassium silicates for industrial use — Determination of total alkalinity — Titrimetric method
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| Označení normy: | ISO 1692:1976 |
| Počet stran: | 2 |
| Vydání: | 1 |
| Vydáno: | 1976 |
DESCRIPTION
ISO 1692:1976
The principle of the procedure based on titration of a test portion with a standard volumetric hydrochloric acid solution, in the presence of methyl orange as indikator. The alkalinity is expressed as a percentage by mass of sodium oxide potassium oxide.