Kemiteknik

Kommittébeteckning: SIS/TK 198/AG 02 (Vattenförsörjning)
Källa: CEN
Svarsdatum: den 4 jun 2024
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This document is applicable to calcium carbonate used for treatment of water intended for human consumption. It describes the characteristics of calcium carbonate and specifies the requirements and the corresponding test methods for calcium carbonate. It gives information on its use in water treatment.

Kommittébeteckning: SIS/TK 349 (Rengöring, desinfektion och sterilisering)
Källa: CEN
Svarsdatum: den 19 jul 2024
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This European Standard specifies a test method and the minimum requirements for mycobactericidal activity of chemical disinfectant and antiseptic products that form a homogeneous, physically stable preparation when diluted with hard water or — in the case of ready-to-use-products — with water.  Products can only be tested at a concentration of 80 % or less, as some dilution is always produced by adding the test organisms and interfering substance. 

This European Standard applies to products that are used in the veterinary area – i.e. in the breeding, husbandry, production, transport and disposal of all animals except when in the food chain following death and entry to the processing industry. EN 14885 specifies in detail the relationship of the various tests to one another and to “use recommendations”. 

NOTE 1 The method described is intended to determine the activity of commercial formulations or active substances under the conditions in which they are used. 

NOTE 2 This method corresponds to a phase 2 step 1 test.