# The Environmental Authorisations (Scotland) Regulations 2018, Paragraph 33


Polishing or etching glass or glass products in the course of any manufacturing activity if—
(a) hydrofluoric acid is used,
(b) hydrogen fluoride may be released into the air.

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Source: https://www.legislation.gov.uk/ssi/2018/219/schedule/26/part/3/paragraph/33 (the official version)
Page: https://openlegislation.uk/environmental-authorisations-scotland-regulations-2018/schedule-26/part-3/paragraph-33
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.