1、Scope of application: suitable for drinking water, aquarium, swimming pool and spa, industrial water, pond, hot spring water, bathtub water, agricultural medicine water, bowl and chopsticks disinfectant residual water. 2、Instant reliable results with simple and clear instructions. Simply dip and compare with large color chart on bottle. Ideal range marked on bottle. 3、Save time, money, and avoid hassle while knowing with confidence your water is balanced and safe. 4、Test items: residual chlorine, pH, alkali, hardness, iron, copper, lead, nitrate, nitrite, bromine, total chlorine, chromium, fluorine, cyanuric acid. 5、keeping your pool, spa or hot tub crystal clear. Features: Scope of application: suitable for drinking water, aquarium, swimming pool and spa, industrial water, pond, hot spring water, bathtub water, agricultural medicine water, bowl and chopsticks disinfectant residual water. Instant reliable results with simple and clear instructions. Simply dip and compare with large color chart on bottle. Ideal range marked on bottle. Save time, money, and avoid hassle while knowing with confidence your water is balanced and safe. Test items: residual chlorine, pH, alkali, hardness, iron, copper, lead, nitrate, nitrite, bromine, total chlorine, chromium, fluorine, cyanuric acid. keeping your pool, spa or hot tub crystal clear. Specifications: Function:14-in-1 Package Size:15x3x3 Package weight:78g Pakage list: 50 PCS  Test Strips 50 PCS Test Strips