I didn't want to threadjack AkaiKitsune's post but it reminded me of a funny story.
Many many years ago, Grandpa read about an offer by the local fire department: bring in your fire extinguisher for a free checkup and replacement (if need be). So he unhooked the extinguisher from the basement wall and went off to the fire department with it.
Grandpa hands over the extinguisher to the Fire Guy.
Fire Guy:

"Where did you GET this??"
Grandpa: "Vat? It vas in my basement!" (Even after half a century here, Grandpa had a heavy German accent.)
Fire Guy:


The extinguisher was probably brand new back in the days of Al Capone. It contained WATER and you pumped the handle to work it.
Fire Guy: "Mister, I can't give this back to you ... it's not safe. But I can give you a brand new one."
Which he did.
Far as Grandpa was concerned, a fire extinguisher was a fire extinguisher. He brought the new one home and mounted it where the old one had been.
I suspect the one he'd taken in found its way to a display case in one or another of the city's fire department sites.
Many many years ago, Grandpa read about an offer by the local fire department: bring in your fire extinguisher for a free checkup and replacement (if need be). So he unhooked the extinguisher from the basement wall and went off to the fire department with it.
Grandpa hands over the extinguisher to the Fire Guy.
Fire Guy:


"Where did you GET this??"Grandpa: "Vat? It vas in my basement!" (Even after half a century here, Grandpa had a heavy German accent.)
Fire Guy:



The extinguisher was probably brand new back in the days of Al Capone. It contained WATER and you pumped the handle to work it.
Fire Guy: "Mister, I can't give this back to you ... it's not safe. But I can give you a brand new one."
Which he did.
Far as Grandpa was concerned, a fire extinguisher was a fire extinguisher. He brought the new one home and mounted it where the old one had been.
I suspect the one he'd taken in found its way to a display case in one or another of the city's fire department sites.

) I would've certainly kept it, just for the conversational value.
I'd heard something about Halon being banned, but wasn't sure how it affected existing fire extinguishers and the legality of buying/owning them. Fortunately, I have yet to need to make use of a fire extinguisher ***KNOCK ON WOOD***, but given 
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