Impurity 1 : A by-product of the manufacture or storage of a pesticide. Impurities require definition, evaluation and regulation if they are toxicologically significant
Health and Safety Executive (HSE), Pesticides Glossary, Merseyside, England, UK 2014. www.pesticides.gov.uk/guidance/industries/...group s/.../pesticides-glossary, (Hlth and Sfty - Brit) {720}