the necessary material. The meat of the issue - list all the steps with necessary details, including what equipment needed. This is usually a list of main steps all with substeps in a very particular order.
Include standards, regulatory requirements, roles and responsibilities, and inputs and outputs. Basically, a troubleshooting section. 4 If necessary, interview the personnel involved in the process on how they execute the task. I too had need of this. This is by no means an exhaustive list; this is just the tip of the procedural iceberg. You want to keep it short and clear - otherwise their attention will stray or they'll find the document formidable and hard to grasp. There is no right or wrong way to write an SOP.
How to write a procedure for a lab