The Tri-Max 3 was so efficient when used by the trained pilot / agent that the same extinguisher, not re-serviced, was used a week later for training 15 personnel to put out a jet fuel fire in a cut down 55 gal drum drip pan. I have had extensive fire fighting training and experience during my 24-year career in the U. S. Navy and prior as a volunteer fireman. I was very impressed by the capability and effectiveness of this unit.
The people at Tri-Max have provided great service and have been a pleasure to work with.
You could not ask for a simpler product to use.