Purple or Copper Cyanurate is caused when the Cyanuric Acid (chlorine stabilizer or conditioner) is allowed to become high or over 100 ppm and it then reacts with any copper that may present in the water. Purple Cyanurate is a chemical/mineral imbalance problem. It is NOT an organism or algae problem.
Rated for Class K fires, K-GUARD Fire Extinguishers are designed specifically to fight some of the toughest firesâhot grease, cooking oil and fat fires in the kitchens and food-prep areas of restaurants, convenience stores, food courts, hospitals, school cafeterias and other facilities.
Class A fire extinguishers are used on Class A fires, that is, ordinary combustibles such as wood, paper, cloth, rubber and small amounts of plastics. Because it may contai â¦ n conductive water, a Class A should never be used on an any other type of fire -- there could be a dangerous reaction.aking the world better, one answer at a time. Class K fire extinguishers are potassium based, which react chemically with the cooking oil to produce froth. The froth rises from the bottom to the surface, and smothers the fire.