# Commission Regulation (EC) No 627/2006 of 21 April 2006 implementing Regulation (EC) No 2065/2003 of the European Parliament and of the Council as regards quality criteria for validated analytical methods for sampling, identification and characterisation of primary smoke products, Division 2.1: Definitions

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

For the purpose of this Annex the following definitions shall apply:
Solvent free mass The mass of the material after abstraction of the solvent, which normally is water.
Volatile fraction The part of the solvent free mass, which is volatile and analysable by gas chromatography.
Identification of a primary product Results of a descriptive analysis, which identifies substances present in the primary product.
Characterisation of a primary product Identification of the major physical-chemical fractions and quantification and identification of the chemical constituents.
LOQ Limit of Quantification
LOD Limit of Detection
Si The single-laboratory standard deviation, calculated from results generated under repeatability conditions as defined in ISO standard 5725-1 (= repeatability standard deviation estimated in a single laboratory approach according to the Harmonized Guidelines for Single-Laboratory Validation of Methods of Analysis).
Sr The average within laboratory standard deviation, calculated from results generated under repeatability conditions as defined in ISO standard 5725-1 in a collaborative trial with a minimum of eight laboratories conducted according to the Protocol for the Design, Conduct and Interpretation of Method-Performance Studies.
SR The between laboratory standard deviation, calculated from results under reproducibility conditions as defined in ISO standard 5725-1 and according to the Protocol for the Design, Conduct and Interpretation of Method-Performance Studies.
RSDi Relative single-laboratory repeatability standard deviation (Si expressed in percent of the measured value),
RSDr Relative average repeatability standard deviation (Sr expressed in percent of the measured value),
RSDR Relative reproducibility standard deviation (SR expressed in percent of the measured value).

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Source: https://www.legislation.gov.uk/eur/2006/627/annex/division/2/division/2.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2006-627/annex/division-2/division-2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.