AquaChek water test strips from Hach® are designed to reliably monitor a diverse range of water testing needs, including pH level, alkalinity, chlorine concentration, or the presence of specific contaminants like nitrate, nitrite, chloride, ammonia, iron, or copper. Our pH test strips offer a simple yet effective method for determining the acidity or alkalinity of your water. Chlorine test strips ensure accurate measurement of chlorine levels in both residential and industrial applications such as pool and spa. Whether used for residential, industrial or municipal applications, our comprehensive range of water test strips delivers reliable results quickly and conveniently.