The HI782 Marine Nitrate High Range Colorimeter is specifically designed to quickly and accurately determine high levels of nitrate for saltwater aquariums and marine applications. With a digital read out, there is no more struggling to determine colors visually. 

• Measurements with a range up to 75.0ppm
• Less complex laboratory grade accuracy - Requires only 1 reagent
• Simple, intuitive operation
• Compact and precise whether at home, at work, or on-the-go