Shanghai Sanxin Apera Instruments Co., Ltd provides scientific electrochemical instruments and sensors for measuring pH, ORP, conductivity, TDS, salinity, dissolved oxygen, turbidity, and ISE 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 Sanxin Apera products are being used by customers in over 50 countries. All the products are CE and RoHS certified and are manufactured in our ISO 9001:2015 certified factory. For over 30 years, we dedicate ourselves to providing more reliable and user-friendly instruments and sensors for our customers, a goal we continue to strive for.