Taylor Commercial Test Kit (uses Midget comparators), Copper, 0.2-3.0 ppm/Iron, 0-2.0 ppm

Metal in pool and spa water can come from three sources: from the fill water itself, as metals occur naturally in ground and surface water; from treatment products containing metal, such as copper algaecides; or, most commonly, from corrosion of the metal piping and equipment or metal objects dropped in the water. Unsightly colored water and stained surfaces are usually the result of excess metal(s) in the water. Taylor offers several colorimetric kits to measure the concentration of the metals most commonly found in pool and spa water: copper, iron, and manganese.

To prevent water conditions that lead to corrosion, also purchase a test kit capable of monitoring the water chemistry parameters involved in water balance (pH, total alkalinity, and calcium hardness).