Commercial inspection of fire extinguishers

I am the safety director for a number of commercial roofing contractors. Beyond our own monthly inspections, I have been asked to look into the requirements for the annual inspections of fire extinguihers. I am wondering what type of certification and equipment I would need to meet the requirements. Please let me know what you think. Thanks!

Around here the local fire department does that. Try giving your local firehouse a call.

Go to and check out their site