ASTM D511 – Standard Test Methods for Calcium and Magnesium In Water
Description:
Significance and Use
4.1 Calcium and magnesium salts in water are the primary components of water hardness which can cause pipe or tube scaling.
Scope
1.1 These test methods cover the determination of calcium and magnesium in water by complexometric titration and atomic absorption spectrometric procedures. Two test methods are included, as follows:
| Sections | |
| Test Method A—Complexometric Titration | 7 – 15 |
| Test Method B—Atomic Absorption Spectrometric | 16 – 25 |
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversion to inch-pound units that are provided for information only and are not considered standard.
ASTM D5104