Dymax Quick Test contains 25 test strips for testing 7 important water values in 1 minute. A simple and quick test for general guidance when testing aquarium; pond; ground water and tap water. Determines the following water values: chlorine (C12); acidity (pH); general hardness (GH); toxic nitrite compound (NO2); Nitrate – cause of algae (NO3); ph stability (KH) and plant nutrient – Total Phosphorous (TP).