# The Bread and Flour (Wales) Regulations 2025, Paragraph 1: Substances that must be added to flour derived from common wheat in specified proportions

Extent: E+W

The substances listed in column 1 of Table 1 must be added to flour derived from common wheat in the proportions and in accordance with the other provisions specified in column 2.
Table 1
Column 1
Substance
Column 2
Quantity of the substance to be added and other provisions in relation to addition of those substances
Calcium carbonate;
(a) At least 300 mg/100 g flour.
(b) Not more than 455 mg/100 g flour.
(c) The substance must be added in the form of E 170 calcium carbonate conforming to the specification set out in Schedule 2 to these Regulations.
(d) But the addition of calcium carbonate is not required to flour that is—
(i) self-raising flour with a calcium content of 0.2% or more, or
(ii) wheat malt flour.
Folic acid
(a) 0.25 mg/100 g flour.
(b) The substance must be added in the form of pteroylmonoglutamic acid conforming to the criteria in the monograph for folic acid hydrate contained in the British Pharmacopoeia 2023 at page I-1110.

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Source: https://www.legislation.gov.uk/wsi/2025/88/schedule/1/paragraph/1 (the official version)
Page: https://openlegislation.uk/bread-and-flour-wales-regulations-2025/schedule-1/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.