# The Materials and Articles in Contact with Food (Scotland) Regulations 2012, Paragraph 3: Reagents


All reagents must be of analytical quality, unless otherwise specified.
Where reference is made to water, it shall always mean distilled water or water of equivalent quality.
(a) 4 % (v/v) acetic acid, in aqueous solution.
Add 40 ml of glacial acetic acid to water and make up to 1 000 ml.
(b) Stock solutions.
Prepare stock solutions containing 1 000 mg/litre of lead and at least 500 mg/litre of cadmium respectively in a 4 % acetic acid solution, as referred to in paragraph 3(a).

---
Source: https://www.legislation.gov.uk/ssi/2012/318/schedule/4/paragraph/3 (the official version)
Page: https://openlegislation.uk/materials-and-articles-in-contact-with-food-scotland-regulations-2012/schedule-4/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.