Hanna Instruments

Hanna Instruments is the world's largest privately held manufacturer of analytical and scientific instruments, founded in 1978 in Italy by Oscar and Anna Nardo. Now led by their children Martino and Pamela Nardo, the company has grown into a global leader with operations spanning 44 countries and over 3,000 products in their portfolio. Headquartered in Woonsocket, Rhode Island, Hanna Instruments specializes in manufacturing precision testing equipment including pH meters, conductivity meters, dissolved oxygen meters, turbidity meters, photometers, titrators, and multiparameter instruments. The company serves diverse industries including food and beverage, agriculture, aquaculture, environmental monitoring, water treatment, pharmaceuticals, and laboratory research. Their comprehensive product line ranges from handheld testers and portable meters to sophisticated benchtop instruments and automated titration systems. Hanna Instruments maintains complete vertical integration, controlling every aspect of manufacturing from initial design and circuit development to final quality testing. Their facilities in Italy, the United States, Romania, and Mauritius produce instruments known for accuracy, reliability, and user-friendly operation. The company's expertise extends to electrochemistry, process instrumentation, and analytical chemistry, with specialized solutions for pH measurement, conductivity analysis, dissolved oxygen testing, turbidity measurement, and colorimetric analysis. Notable product lines include the pHep series of pH testers, GroLine meters for agricultural applications, Marine Master photometers for aquaculture, and the edge series of advanced benchtop meters. Hanna Instruments also manufactures calibration solutions, buffer solutions, reagents, and replacement electrodes to support their instrument ecosystem. Their commitment to innovation and quality has made them a trusted partner for professionals in water quality testing, food safety analysis, environmental compliance, and research applications. The company's global distribution network ensures comprehensive customer support and technical assistance worldwide, backed by over 45 years of experience in analytical instrumentation.