NEN 6549
Water for boiler plants - Photometric determination of total hardness
inactive, Most Current
| Organization: | NEN |
| Publication Date: | 1 March 1988 |
| Status: | inactive |
| Page Count: | 4 |
| ICS Code (Examination of physical properties of water): | 13.060.60 |
scope:
This standard describes a method for the photometric determination of the total hardness of water in boiler plants. It applies to any kind of water in boiler plants with a total hardness of at least 1.25 µ mol/l and at most 10 µ mol/l. If the sample contains more than 2 µ g iron(III) or 400 µ g copper(II) the determination cannot be conducted properly. Most remaining metal ions will not interfere with the method described.
Document History
NEN 6549
March 1, 1988
Water for boiler plants - Photometric determination of total hardness
This standard describes a method for the photometric determination of the total hardness of water in boiler plants. It applies to any kind of water in boiler plants with a total hardness of at least...