25 Strips/BottleTests for: CopperTest for copper to avoid a high concentration and prevent discolored water and staining.Results with just one dip, in just seconds! Ideal for use with copper-based mineral purification systems.For a clean and healthy pool, test the water at each end a minimum of twice a week.Range: 0, 0.2, 0.5, 1, 3For more inquiries, look for Ms. Ann or Ms. Jean
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