OP 09 : Organophosphorus pesticide. A generic term for pesticides containing phosphorus but commonly used to refer to insecticides consisting of cholinesterase inhibiting esters of phosphate or thiophosphate
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}