Oxidation-Reduction Potential (ORP) sensors measure the ability of a solution to act as an oxidizing or reducing agent. To achieve accurate results, the correct combination of reference system, junction and shape are important. BOQU Instrument offers ORP sensors with smooth metal surfaces and unique reference junctions to ensure dependable measurements, even in dirty samples. BOQU Instrument make platinum, silver and gold ORP sensors to best support your application. While platinum sensors cover a majority of applications, a gold sensor is best in the case of highly oxidizing samples. Finally, silver sensors should be used for silver-based electrochemistry such as chloride determination.