pHionics, founded in 1982, specializes in manufacturing high-quality sensors for pH, ORP, dissolved oxygen, and conductivity measurement. With over 40 years of experience in the water quality industry, pHionics focuses on providing reliable, low-maintenance, and easy-to-use sensors. Their products include pH sensors, conductivity sensors, dissolved oxygen sensors, and ORP sensors, as well as a range of accessories. pHionics' innovative designs have led to industry-leading advancements such as miniaturization, patented connector systems, and the development of multiparameter arrays. The company's commitment to quality is evident through their U.S. patents and a focus on excellent customer service.