# The Welfare of Animals (Slaughter or Killing) Regulations 1995, Paragraph 9


No person shall use, or cause or permit to be used, electrodes to stun any animal individually unless the apparatus—
(a) incorporates a device which—
(i) measures the impedance of the load; and
(ii) prevents operation of the apparatus unless a current can be passed which is sufficient to render an animal of the species being stunned unconscious until it is dead;
(b) incorporates an audible or visible device indicating the length of time of its application to an animal; and
(c) is connected to a device indicating the voltage and the current under load, positioned so as to be clearly visible to the operator.

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Source: https://www.legislation.gov.uk/uksi/1995/731/schedule/5/paragraph/9 (the official version)
Page: https://openlegislation.uk/welfare-of-animals-slaughter-or-killing-regulations-1995/schedule-5/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.