Chemicals used for treatment of water intended for human consumption - Iron-based coagulants - Analytical methods; German version EN 17215:2019— 42 стр.
Chemical products for industrial use; Sampling techniques; Solid chemical products in the form of particles varying from powders to coarse lumps— 36 стр.
Chemicals used for treatment of water intended for human consumption - Iron-based coagulants - Analytical methods; German and English version prEN 17215:2018