The API freshwater master test kit provides information on how to perform each test. The tropical freshwater master test kit measures the most important levels in your aquarium
pH High range pH Ammonia Nitrite Nitrate
The tests are fast easy and accurate. A step by step instruction booklet is included along with water resistant computer calibrated colour charts.The API master test kit measures pH 6.0 to 7.6 and also high range pH 7.4 to 8.8.