Founded in Year 1991, located in Shanghai Caohejing Industrial Park, Shanghai Sanxin Instrumentation Inc. is specialized in electrochemical instruments and sensors development and production. In year 2014, We brought together premium pH electrode manufacturing technologies and key components from Switzerland into the LabSen series pH electrodes, which includes two categories: Standard and Professional where there are more than 30 different models in total, representing the world's leading pH electrode technology. Our mission is to offer you the first-class products and service so that you can always have an accurate, reliable, and convenient testing experience.