Subscribe to updates
ISO 1063:1974
Surface active agents -- Determination of stability in hard water
This standard has been reviewed and then confirmed in 2010
More information
ISO standards are reviewed every five years
Close
Media and price
| Price | Language | ||
|---|---|---|---|
| CHF 44,00 | Add to basket | ||
| Paper | CHF 44,00 | Add to basket |
Abstract
Solutions of the substance to be tested in differing concentrations are mixed with hard water solutions of differing known calcium hardness. After leaving the solutions to stand in specified conditions their appearance, i.e. clearness, opalescence, cloudiness or precipitation is observed. The method is applicable to surface active agents soluble in water at 20 °C. It can be extended to those which are soluble at approximately 50 °C.
