On Spot Fire Fighters Fire Protection Powder fire extinguishers are ideal for use on Class, B and C Fire Risks. We are We are offering a high quality range of BC Type Fire Extinguishers to our clients. Powder fire extinguishers are available in 4kg, 6kg and 9kg standard versions. This model is designed to extinguish 'b' and 'c' type fires involving material like Petro Chemical products, Paints, Resins, Pigment, Varnish, Gases in the compressed from like oxygen, Acetylene, LPG, & CNG