German standard methods for the examination of water, waste water and sludge; summary indices of actions and substances (group H); water hardness (H 6)— 4 стр.
Testing of surface active agents; determination of the stability of surface active agents and products made of such against hard water; stability against water with only calcium hardness— 3 стр.
Corrosion of metals - Corrosion of metallic materials under corrosion load by water inside of tubes, tanks and apparatus - Part 6: Influence of the composition of drinking water— 13 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.
Methods of soil investigations for agricultural engineering - Chemical laboratory tests - Part 10: Testing and evaluation of water for irrigation— 11 стр.
Storage quality of processed photographic film for archival records; silver-gelatin type on cellulose ester base and on polyethylen terephthalate base; specifications— 8 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.
