ISO 787-9:1981 PDF
General methods of test for pigments and extenders — Part 9: Determination of pH value of an aqueous suspension
Open preview (PDF)General methods of test for pigments and extenders — Part 9: Determination of pH value of an aqueous suspensionTitle (English):
ISO 787-9:1981
General methods of test for pigments and extenders — Part 9: Determination of pH value of an aqueous suspension
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 2
- Publication date:
- September 1, 1981
- Edition:
- ISO IS 787 edition 1 version 1
- ICS:
- 87.060.10
Description (English):
The water used shall be freshly distilled water, boiled before use, but for 5 to 10 min only, in order to avoid an increase of its pH value due to alkali dissolved from the glass. Preparation of a suspension of the material under test, stopper the container, shaking, allow to stand any time, removing the stopper and determination, to the nearest 0.1 unit, of the pH value of the suspension. - Cancels and replaces ISO Recommendation R 787/9-1970.
Technical details
- Technical committee
- ISO/TC 256 - Pigments, dyestuffs and extenders
- SKU
- ISO 787-9:1981
