Red Sea marine care test kit includes all of the main kits you need to run a healthy marine aquarium, allowing you to easily monitor the nitrate, nitrite, ammonia, pH and alkalinity levels. The easy-to-use tests come with simple instructions and color charts so you can accurately monitor all the important parameters during the biological maturation period of marine and reef aquariums and for the ongoing maintenance in any saltwater aquarium. 100 Ammonia test with accuracy of 0.02 ppm, 100 and 60 nitrate test with accuracy of 2 ppm and 0.05 ppm, 100 pH test with accuracy of 0.2 ppm, 55 alkalinity test with accuracy of 1 dKH/0.36 meq/L.