The API Freshwater Test Kit is essential for maintaining the health and happiness of your aquarium fish by ensuring optimal water quality. This kit allows you to test your water and prevent dangerous conditions. All tests are easy to use and feature easy-to-read color charts. The kit includes test bottles for pH, High Range pH, Ammonia, Nitrite, and Nitrate, along with 4 test tubes, color charts, and a holding tray. Instructions are also included. It tests for 5 different parameters: pH, ammonia, nitrite, nitrate, and high range pH, with over 800 tests included. The kit is highly accurate and economical.