Jack’s Magic’s Stain IDentification Kit gives pool owners an easy way to treat the staining problems in their pool by applying the proper treatment, simply by using this handy kit. Stain IDentification Kit gives you 4 easy-to-apply Jack’s Magic test chemicals to use on the stain problem, and which quickly cuts through the stain is the product that will effectively remove them. This test kit will tell you what you need for treating your staining problems, saving you time and money.