SOPs (standard operating procedures) are written instructions that describe how to perform work tasks and processes. They aim to promote efficiency, quality, and uniformity. SOPs should identify who is responsible for each procedure, the steps to be taken, required equipment, and the frequency and critical parameters of the procedure. There are different types of SOPs including operational, cleaning, and general SOPs. An SOP contains sections for the title, purpose, scope, responsibility, procedure, rationale, definitions, references, and history.