# 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 3.3

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

A water-circulation system, enabling the prisms of the refractometer (3.1 or 3.2) to be kept at a constant temperature (varying by no more than 0,5 °C) of about 20 °C, which is the reference temperature (see 5.1).

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Source: https://www.legislation.gov.uk/eur/1986/1764/annex/division/2/division/3/division/3.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-1986-1764/annex/division-2/division-3/division-3.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.