# Council Decision of 14 November 1992 laying down methods for the analysis and testing of heat-treated milk for direct human consumption (92/608/EEC), Division 4: REAGENTS

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

All reagents shall be of recognized analytical quality and shall leave no appreciable residue when taken through a blank test.
To test the quality of the reagents, carry out a determination as specified in 6.3. Use an empty flask, beaker or metal dish (5.8.) for weighing, prepared as specified in 6.4. as a tare (to allow correction for the effects on the weighing result, caused by changes in the atmospheric conditions). If the residue, corrected for the apparent change of the mass of the tare is larger than 2,5 mg, determine the residue or the solvents separately by evaporating 100 ml diethyl ether (4.4.) and 100 ml light petroleum (4.5.) respectively. Also use a tare for the weighing. When the residue is larger than 2,5 mg, cleanse the solvent by means of distillation or replace the solvent.

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Source: https://www.legislation.gov.uk/eudn/1992/608/annex/2/division/II/division/4 (the official version)
Page: https://openlegislation.uk/eu-decision-1992-608/annex-2/division-II/division-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.