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Division 3.4 Calculation of results

United Kingdom

Original text. Later amendments are not shown.

Every non-ionic surfactant has its own factor, depending on its composition, particularly on the length of the alkene oxide chain. The concentration of non-ionic surfactant is expressed in relation to a standard substance — a nonyl phenol with ten ethylene oxide units (NP 10) — for which the conversion factor is 0,054.

Using this factor the amount of surfactant present in the sample is found expressed as mg of NP 10 equivalent, as follows:

(b — c) xfx 0,054 = mg non-ionic surfactant as NP 10

where:

b

  • volume of ‘carbate solution’ used by the sample (ml),

    • c

  • volume of ‘carbate solution’ used by the blank (ml),

    • f

  • factor of the ‘carbate solution’.

    • Notes on the whole EU Regulation

    Textual amendments

    F1

    Substituted by Regulation (EC) No 1336/2008 of the European Parliament and of the Council of 16 December 2008 amending Regulation (EC) No 648/2004 in order to adapt it to Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures (Text with EEA relevance).

    F2

    Deleted by Regulation (EC) No 219/2009 of the European Parliament and of the Council of 11 March 2009 adapting a number of instruments subject to the procedure referred to in Article 251 of the Treaty to Council Decision 1999/468/EC with regard to the regulatory procedure with scrutiny Adaptation to the regulatory procedure with scrutiny — Part Two.

    Notes on Annex VIII

    Textual amendments

    F1

    Words in Annex 8 substituted (31.12.2020) by The Detergents (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/672), regs. 1, 29; 2020 c. 1, Sch. 5 para. 1(1)