It allows users to purchase only the components needed initially, but expand measurement capability later to meet changing plant requirements. The S8000 pH/ORP electrode incorporates the vendor's double-junction ERP technology, which provides a complex path to protect the reference in the presence of interacting ions such as proteins, silver and sulfides that interact with silver or chloride. The flat surface self-cleaning technology is said to mean less maintenance throughout the life of the product, especially in turbulent flow.Sensorexwww.sensorex.com714.895.4344