Hanna Instruments is the world’s largest privately held manufacturer of analytical and scientific instruments. Since 1978 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. Hanna operates in 34 countries around the globe, ensuring exceptional levels of customer service and support.