Nutrafin Master Test Kit, Contains 10 Test Parameters Master Test Kit; Ensures your fish are living a proper environment Includes all Hagen test kits including ammonia, pH, calcium, phosphate, iron, nitrite, nitrate, KH and GH Easy-to-read color charts are included For fresh and saltwater aquariums; Full instructions for each test Packed in a solid, durable case that holds everything; Acts as an excellent working area