German standard methods for the examination of water, waste water and sludge - Cations (group E) - Part 3: Determination of calcium and magnesium, complexometric method (E 3)— 13 стр.
Water quality - Determination of calcium and magnesium - Atomic absorption spectrometric method (ISO 7980:1986); German version EN ISO 7980:2000— 9 стр.
Corrosion of metals - Corrosion of metallic materials under corrosion load by water inside of pipes, tanks and apparatus - Part 6: Evaluation process and requirements regarding the hygienic suitability in contact with drinking water— 27 стр.
German standard methods for the examination of water, waste water and sludge - Physical and physico-chemical parameters (group C) - Part 10: Calculation of the calcit saturation of water (C 10)— 23 стр.
German standard methods for the examination of water, waste water and sludge - Physical and physico-chemical parameters (group C) - Part 10: Calculation of the calcit saturation of water (C 10)— 23 стр.
Corrosion of metals - Corrosion of metallic materials under corrosion load by water inside of pipes, tanks and apparatus - Part 6: Evaluation process and requirements regarding the hygienic suitability in contact with drinking water— 27 стр.