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sklademVydáno: 1985-12-12
ISO 8215:1985
ISO 8215:1985 - Surface active agents — Washing powders — Determination of total silica content — Gravimetric method
Formát
Dostupnost
Cena a měna
Anglicky PDF
K okamžitému stažení
Tisknutelné
1258 Kč
Francouzsky PDF
K okamžitému stažení
Tisknutelné
1258 Kč
Anglicky Tisk
Skladem
1258 Kč
Francouzsky Tisk
Skladem
1258 Kč
| Označení normy: | ISO 8215:1985 |
| Vydání: | 1 |
| Vydáno: | 1985-12-12 |
| Počet stran (Anglicky): | 3 |
| Počet stran (Francouzsky): | 3 |
Popis
ISO 8215:1985
From a test portion all ethanol-soluble matter is removed by extraction with ethanol. The solution of the ethanol-insoluble residue is treated with hydrochloric acid and evaporated to dryness. The residue is dissolved in water and the operations are repeated twice. From the solution obtained after this operations the precipitate is filtered, washed, heated to 900 °C and weighed.