# First Commission Directive of 26 July 1979 laying down Community methods of analysis for testing certain sugars intended for human consumption (79/796/EEC), Division 4.3: Alkaline copper reagent: dissolve 25 g of anhydrous sodium carbonate and 25 g of potassium sodium tartrate tetrahydrate in about 600 ml of water containing 40 ml of 1.0 mol/litre sodium hydroxide. Dissolve 6·0 g of copper II sulphate pentahydrate (CuSO4.5H2O) in about 100 ml of water, and add to the tartrate solution. Dilute to one litre with water.

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



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Source: https://www.legislation.gov.uk/eudr/1979/796/annex/II/division/6/division/4/division/4.3 (the official version)
Page: https://openlegislation.uk/eu-directive-1979-796/annex-II/division-6/division-4/division-4.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.