# Commission Regulation (EEC) No 1764/86 of 27 May 1986 laying down minimum quality requirements for products processed from tomatoes under the production aid scheme, Division 2.2: Alkaline solution of potassium sodium tartrate

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

Dissolve 173 g of potassium sodium tartrate 4H2O (Rochelle salt) with 50 g of NaOH in water and dilute to 500 ml. Leave standing for two days, then filter through asbestos.

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Source: https://www.legislation.gov.uk/eur/1986/1764/annex/division/4/division/2/division/2.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-1986-1764/annex/division-4/division-2/division-2.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.