# 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 4.1.2: Solution B:

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

Dissolve 346·0 g of sodium potassium tartrate tetrahydrate (KNaC4H4O6.4H2O) and 100 g of sodium hydroxide in water. Make up to volume in a 1 000 ml volumetric flask. Decant the clear solution from any sediment that may from time to time form.

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Source: https://www.legislation.gov.uk/eudr/1979/796/annex/II/division/9/division/4/division/4.1/division/4.1.2 (the official version)
Page: https://openlegislation.uk/eu-directive-1979-796/annex-II/division-9/division-4/division-4.1/division-4.1.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.