Hanna Instruments is the world’s largest privately-held manufacturer of analytical and scientific instruments. Hanna has produced simple, affordable, high-quality devices for laboratory, food, agriculture, aquarium, environmental, industry applications, and more. We offer a wide array of instrumentation from research-grade benchtop meters and ISEs, to single and multiparameter meters for pH, DO, and more. Thousands of consumers and major brands trust Hanna for their testing needs.