# Commission Regulation (EEC) No 2568/91 of 11 July 1991 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis, Division 6.1

Extent: E+W+S+N.I.

Record the specific extinctions (extinction coefficients) at the various wavelengths calculated as follows:
Kλ = Eλ c × s
where:
Kλ specific extinction at wavelength λ;
Eλ extinction measured at wavelength λ;
c concentration of the solution in g/100 ml;
s path length of the quartz cell in cm;
expressed to two decimal places.

---
Source: https://www.legislation.gov.uk/eur/1991/2568/annex/IX/division/6/division/6.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-1991-2568/annex-IX/division-6/division-6.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.