[F1 ANNEX IX U.K. SPECTROPHOTOMETRIC INVESTIGATION IN THE ULTRAVIOLET

Textual Amendments

F1 Substituted by Commission Implementing Regulation (EU) 2015/1833 of 12 October 2015 amending Regulation (EEC) No 2568/91 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis.

6. EXPRESSION OF THE RESULTS U.K.

6.1. Record the specific extinctions (extinction coefficients) at the various wavelengths calculated as follows: U.K.

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.

6.2. Variation of the specific extinction (ΔΚ) U.K.

The variation of the absolute value of the extinction (ΔΚ) is given by:

where Km is the specific extinction at the wavelength for maximum absorption at 270 nm and 268 nm depending on the solvent used.

The results should be expressed to two decimal places.]