Monitor 9 parameters most critical for analysis in marine and brackish environments and saltwater aquariums. Kit contains water test modules for alkalinity, ammonia nitrogen, carbon dioxide, dissolved oxygen, nitrate nitrogen, nitrite nitrogen, pH, salinity, and temperature. Mounted within a sturdy, waterproof carrying case designed for convenient test selection and portability. Lid label instructions are included for quick reference, and a booklet provides detailed instructions with a kit diagram. Labware, accessories, sampling bottles, and reagents for 50 tests of each factor are included. Refill includes consumable components. Sold only to schools and businesses.