Apera Instruments excels in delivering measurement solutions for pH, ORP, conductivity, TDS, salinity, dissolved oxygen, turbidity, and a variety of other ions with our industry-leading technologies, quality control system, and customer service. We have been focused on the development and manufacture of electrochemical instruments and sensors since 1991. Millions of Apera products are being used by customers in over 60 countries. All the products are CE and RoHS certified and are manufactured in our ISO 9001:2015 certified factory. For over 30 years, we strive to empower individuals, organizations, and communities to better understand and manage water quality by providing innovative electrochemical instruments and sensors.