Water extinguishers are suitable for Class A type fires involving combustible materials such as wood, paper and fabrics. Water is a fast and efficient means of extinguishing these materials. It works by having a rapid cooling effect, so that insufficient heat remains to sustain burning and continuous ignition ceases. Manufactured in both stored pressure and gas cartridge versions, water extinguishers are available in two models: 9 and 6 Litre.
 

Foam spray extinguishers (AFFF), are ideal for multi-risk situations where both Class A combustible materials and Class B flammable liquid risks are likely to be found. Foam sparay extinguishers are especially suitable for Class B fires involving flammable liquids such as oils, spirits, greases, fats and certain plastics. Manufactured in four stored pressure models: 9, 6, 2 and 1 Litres, and two gas cartridge models: 2 and 1 Litre.
 

Powder extinguishers are suitable for use on Class A, B and also Class C type fires involving flammable gases such as propane and butane. Powder is also highly effective for electrical hazards. This multi-purpose powder interfers with the combustion process and provides rapid-fire knock down. Multi-purpose powder extinguishers are Manufactured in five stored pressure models: 9, 6, 4, 2 and 1 Kilogram, and three gas cartridge models: 9, 6, and 4 kilogram.
 

CO2 (carbon dioxide) extinguishers are for class B and C fires. They don't work very well on class A fires because the material usually reignites. CO2 extinguishers have an advantage over dry chemical in that they leave behind no harmful residue. That makes carbon dioxide a good choice for an electrical fire involving a computer or other delicate instrument. Note that CO2 is a bad choice for a flammable metal fires such as Grignard reagents, alkyllithiums and sodium metal because CO2 reacts with these materials.