Check the listing for details. AquaChek 661454 Swimming Pool Copper Test Kit - 25 Pack Bottle. Condition: New. Listed at 17.91 USD. AquaChek 661454 Swimming Pool Copper Test Kit - 25 Pack Bottle Item Number: 107763 AquaChek® Copper test strips - provide pool owners with an easy, effective way to test for total copper content, which if too high can create problems such as staining, water discoloration, and corrosion. Once inserted into water, Aquacheck Copper will produce you with a quick, accurate reading of copper levels in your system, which if too high can then be eliminated by many different water treatments. Just dip and wait 15 seconds. Tests for copper. Directions for Use: Remove one strip from bottle and replace cap. Dip strip into water, moving strip back and forth for 5 seconds, then remove For heated water samples above 85 degrees, dip strip into water for 1 second and remove immediately. Hold strip level for 60 seconds. Compare copper test pad to color chart above. Estimate results if color on test pad falls between two color blocks.