# The Ammonium Nitrate Materials (High Nitrogen Content) Safety Regulations 2003, Paragraph 9


A probe for continuous measurement of the detonation velocity can be used; the probe should be inserted longitudinally to the axis of the tube or along its side wall.

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Source: https://www.legislation.gov.uk/uksi/2003/1082/schedule/2/paragraph/9 (the official version)
Page: https://openlegislation.uk/ammonium-nitrate-materials-high-nitrogen-content-safety-regulations-2003/schedule-2/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.