Frequently Asked Questions
Do you have a question about policing or the law? You may be able to find the answer here.
Through our frequently asked questions section we aim to help you find the answers you need without having to call us to ask for information. We've provided answers to questions on a range of topics which are regularly asked of police forces up and down the country.
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CS (named after the initials of the inventors Corson and Staughton) combines the compound (o-chlorobenzylidine malononitrile) a white crystalline substance which is dissolved in the inert solvent MiBK (methyl iso-butyl ketone) and held by this substance in suspension. When it is expelled from the canister as a liquid jet, the CS compound which is suspended in the liquid compound (MiBK) separates from the matrix liquid on contact with the air.
Any cannister of whatever description, designed or adapted for discharge of CS spray is a prohibited weapon.
Police officers are properly and regularly trained in the use of CS spray and it is used when appropriate by officers when they feel that the offender poses a risk to themselves and/or the police officers and others in the vicinity.