No mess, no fuss water testing! Fast & accurate, easy to read results in just 15 seconds! Designed and used in the medical industry, AquaChek test strips replace messy drop tests and make water testing quick and easy. AquaChek Test Strips also provide better accuracy and are safer to use than drop tests. Just Dip and compare to the color chart on the back of each bottle. AquaChek Test Strips are available in a multitude of tests for most every pool & spa application. Simple, easy, and inexpensive!