Kjemiteknikk

Komité: SN/K 98 (Vannforsyning )
Opprinnelse: SN
Sluttdato: 16. jun 2022
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This European Standard specifies the characteristics and the requirements for sulfamic acids and salts. Similar to antiscalants as phosphonic acids and its salts (EN 15040) and polycarboxylates and its salts (EN 15039), sulfamic acid and its salts can be used alone or in combination with others drinking water substances as antifoulants (antiscalant effect) for membranes for the treatment of water intended for human consumption. Sulfamic acid and salts are used in mixtures with sodium hydroxide and sodium hypochlorite or other drinking water chlorine based oxidizing agents as biofilm remover especially for reverse osmosis (RO) and nanofiltration membranes to prevent biofouling by microbiological contamination. The components will not pass the membrane and are rejected to the wastewater with the concentrate. For the other components EN standards are already exist.

Komité: ISO/TC 54 (Essential oils)
Opprinnelse: ISO
Sluttdato: 19. jul 2022
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ISO/TS 210:2014 describes the specifications to be met by the containers intended for containing essential oils, as well as recommendations relating to their conditioning and storage. Essential oils are used for different purposes: food use, pharmaceutical use, perfumery and cosmetic use, reference samples or test samples, and industrial raw materials.

Komité: ISO/TC 54 (Essential oils)
Opprinnelse: ISO
Sluttdato: 19. jul 2022
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ISO/TS 211:2014 specifies the general rules for labelling and marking of containers for essential oils to enable the identification of the contents.