Fire Extinguisher Classification Can I Use My OLD Fire Extinguisher..?

Can I use my OLD fire extinguisher..? - fire extinguisher classification

It is a fire extinguisher of 10 pounds of dry chemical (basic-ammonium phosphate). Classification: A, B and C.

His last service was 23 March 1995 (LOL) and a powder fire extinguisher ... if that makes sense ...

Anyway, the real problem here is that I can not use the damn breath on my face .. or any kind of difficulties that damn years old, if you ask me.

To use the current to fight the fire extinguisher dangerous to make a good, old, stupid, but fun. Tell me if it is about and why thank you!