This is a Pentair Rainbow #79 Specialty Test Kit for Cyanuric Acid/Turbidity using a slide calibrated test stick and reagent. The reagent in this kit is 8 ounces. This kit includes instructions.
One of the most common chemicals used for the prevention of chlorine loss in swimming pools is Cyanuric Acid (also called CYA, Conditioner, or Stabilizer); it protects the free chlorine from being destroyed by the sun ultraviolet rays. If cyanuric acid is present in the water in sufficient levels, less chlorine degradation occurs. Keeping chlorine in the water longer will help to protect the swimmers in the pool.
