The Salifert Ammonia Test Kit provides a quick and straightforward method for measuring the sum of toxic ammonia and ammonium in aquariums. It's crucial for ensuring the proper cycling of aquariums and monitoring biological processes. With this test kit, you can easily determine if ammonia and ammonium are being converted into nitrite, nitrate, and nitrogen gas as they should be. Each package includes 50 tests, offering ample opportunities for regular monitoring and maintenance of aquarium water quality.