Regulation 15 Retention of classification data for substances and preparations dangerous for supply
A person who classifies a substance in accordance with regulation 5(4) or a preparation dangerous for supply shall keep a record of the information used for the purposes of classifying it for at least 3 years after the date on which the substance or preparation was supplied for the last time and shall make the record or a copy of it available to the appropriate enforcing authority referred to in regulation 18(2) at its request.