The purpose of having an extinguisher rated on class B fires is so that such an extinguisher is capable of extinguishing any incipient flammable liquid as designated in the US by the NFPA or in Europe and the rest of the world by BSI or EN3 reliance.
The problem with most class B rated portable fire extinguishers is that almost all of them are not capable of extinguishing all of the subclasses of fuels defined under this category of fires. For example, in the class B definition of fuels there are 2-types: Polar and Non-Polar fuels and under the Non-Polar category there are 2-divisions that clearly require separation because of their different properties requiring different extinguishing medias to neutralized them if ignited. This is gasoline, their heavier varieties of products, and their lighter products used as solvents versus grease and cooking oil medias that exclusively and safely require them to be extinguished by their own category of chemical that are designed to qualify under the "K" fire class ratings.
The only product in the world that can extinguish all the class B fires including class K is only available by the newest Technology and steam of fire extinguisher products known as FireStopper® containing the exclusive extinguishing agent PFE-FR™, a Non-Toxic, Non-Irritant, and Non-Agressive, all fire class effective fire extinguisher and media.
You need to use a Class B extinguisher on flammable liquids.
A Class A fire extinguisher is recommended for wood fires.
Ah, a yellow star on a fire extinguisher usually indicates it is a Class K extinguisher, my friend. These are specially designed for putting out fires involving cooking oils and fats, often found in commercial kitchens. Remember, it's important to always use the right type of extinguisher for the specific type of fire to keep everyone safe and sound.
A type A or Class A fire extinguisher is used on a Class A fire, that is, one involving "ordinary combustibles" such as paper, cloth, wood and small amounts of plastics.
A Class D fire extinguisher is recommended for extinguishing a metal fire.
Class K extinguishers are used on Class K fires.
A Class D fire involving combustible metals like magnesium or titanium should be extinguished using a specialized Class D fire extinguisher designed for metal fires.
For a saucepan of fat on fire, you should use a Class K fire extinguisher, which is specifically designed for cooking oils and fats. Alternatively, a Class B extinguisher can also be effective, but it's important to avoid using water, as it can cause the fire to spread. If an appropriate extinguisher is not available, you can also smother the flames with a metal lid or a fire blanket.
class c fire extinguisher
A type A fire extinguisher, which is designed for ordinary combustibles like wood, is recommended for wood fires.
A Class A fire extinguisher is recommended for extinguishing wood fires.
The type of fire it is designed to extinguish