Apera Instruments, LLC provides a reliable and affordable solution for scientific electrochemical analysis. Since 1991, our t ... eam has been focusing on the research, design, and manufacture of electrochemical meters and sensors, such as pH, conductivity, ORP, Dissolved Oxygen, ISE, and etc. All of our products are backed by proprietary technologies and designs and have been giving our customers a more reliable and easier testing experience over 25 countries across Europe, America, Asia, and Africa. With ISO 9001:2008 certified, Apera Instruments has a strict quality management system. All the products are CE certified. With our strong R&D capability, and high product quality on one hand, Apera is also known for providing outstanding technical supports and after-sale services in order to ensure our customers a satisfied testing experience. read more