Question:
I have a Kidde dry chemical home fire extinguisher. It is at least 10-12 years old. It has a gauge that still reads in the green. Does this mean it's still safe and can be relied on, or do these things need to be replaced after awhile no matter what the gauge reads?

Answer: -actually the dry chem will settle to the bottom and vibration causes it to settle and get stiff. Turn it over, hit it with a rubber mallet and right it back to loosen up the chemical. not sure of the size but they are fairly cheap to buy and yours shud have a date somewhere to tell you if its still useable

-THe Kidde Canister extinguishers for home use are usually not servicable, and are warrentied for between 6 and 12 years old. Yours is due for replacement. You can use the old one for practice. It's amazing how many people don't actually know how to WORK a fire extinguisher...