Most fire extinguishers found in homes are single-use types, meaning that they cannot be recharged after being used. They should be replaced according to the manufacturer's recommendations.
Extinguishers should be checked annually (monthly in schools and businesses). Depending upon the type of extinguisher it will also need a test every 5 or 12 years to make sure the tank is still strong enough for the internal pressure, called a "hydrostatic test".
No, fire extinguishers are typically designed for multiple uses as long as they are properly maintained and have not expired.
Class A
USFA fire extinguishers is a good brand. Remove the safety pin if there is one and break the safety seal. After that exert pressure by squeezing the handle.
Nitrogen can be used in fire extinguishers as gas propellant.
FIRE extinguishers are used to put out fire.
You can get fire extinguishers recharged at fire equipment companies, some hardware stores, and fire departments.
No, there are boats that do not need any fire extinguishers.
Class A
Yes, as long as they still meet current fire inspection standards
Fire extinguishers are best used on incipient (at the beginning) fires.
Class D, for metal fires.
As long as your fire extinguisher has class k[cooking fire]labeled on the front.