API Freshwater Master Test Kit is a complete test kit for testing tap and aquarium water. 
 
Water Test Kit for Freshwater Aquariums
Tests: pH, ammonia, nitrite, nitrate and high range pH
Includes: computer-analyzed laminated color cards, instruction booklet, 4 test tubes, a holding tray and test tube rack.
Over 800 tests per kit
The Freshwater master test kit is a fast, easy, and accurate test kit. It provides information on how to perform each test, how often to perform the tests, what the test results mean, and how to correct any unsafe water conditions that may be detected.
The kit is complete for testing tap water and aquarium water. It includes pH (6.0 to 7.6), high range pH (7.4 to 8.8), ammonia, nitrite and nitrate tests. The kit also includes an instruction booklet complete with information on water testing, water resistant computer calibrated color charts, test solution bottle for the five freshwater tests, and four glass test tubes with snap-tight caps in holders.