The Hanna Instruments HI 3133B is a half-cell oxygen reduction potential (ORP)/mV electrode used for titration with a glass body, conical tip, platinum pin, and a Bayonet Neill-Concelman (BNC) connector. An ORP electrode is used to measure the oxidization or reduction capacity of a solution, and to monitor chemical reactions and ion activity. It is commonly used for water testing, pulp bleaching, and for biological sample analysis in swimming pools, cooling towers, wastewater treatment, and industrial applications. The 120mm high glass body of this electrode has an outside diameter of 12mm for use in highly corrosive environments and high temperatures. The electrode has a platinum pin to measure conductivity. A BNC connector provides tight cable connections.

Specifications

An electrode, also called a sensor or probe, is an instrument used with a meter to test and measure parameters of a substance. All electrodes are probes or sensors, but not all probes are electrodes or sensors. Probes, such as temperature probes, are used to penetrate a material for measurement. Common electrode types are pH, total dissolved solid (TDS), and ion selective electrode (ISE). Electrodes can be half-cell or full-cell (also called combination) types. They can be refillable or non-refillable. Housing material is typically glass or epoxy, and sensors are commonly made with stainless steel or a glass bulb. pH electrodes, which measure the pH of a substance, often have a glass bulb. The bulb senses hydrogen ions, and generates a millivoltage that is picked up by the filling solution and transferred to a wire that connects to the pH meter. Ion selective electrodes (ISEs) respond selectively to ions in the presence of other ions. Electrodes are commonly used by researchers, manufacturers, and hobbyists in a wide variety of industries, such as aquaculture, agriculture, chemistry, food and beverage, wine-making and water-testing, and for scientific applications. An electrode can be used with a datalogger to assist in temperature measurement.

Hanna Instruments manufactures analytical instrumentation and supplies, including pH meters, electrodes, chemical reagents, and buffer solutions. The company, founded in 1978 and headquartered in Woonsocket, RI, meets International Organization for Standardization (ISO) standard 9001.