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The Thermo Scientific Orion two-electrode conductivity cell measures the collective concentration of ions in aqueous solutions to determine conductivity in boiler feed water, drinking water, process water, and other water testing applications. Cell constants (K) of 0.1, 1, and 10 are available for converting the measured conductance to conductivity. Two electrodes allow readings at depths of 20mm to 55mm, depending on the cell. A variety of body and electrode materials are available to suit different applications. The conductivity cell includes a cable with a Deutsches Institut für Normung (DIN)-compliant connector for attaching to compatible meters. Conductivity cells contain two, three, or four electrodes, which are spaced apart to measure the concentration, or ionic strength, of all ions present in an aqueous solution, and they are commonly used for water testing in field and laboratory applications, among others. 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), oxidation reduction potential (ORP), and ion selective electrode (ISE). They come in standard models or in all-in-one (sometimes called 3-in-1) models, which have a built-in temperature sensor for automatic temperature compensation (ATC). Electrodes can be half-cell or full- (also called combination) cell type. 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. ORP, also known as redox, electrodes measure dissolved oxygen in aqueous solutions to determine the level of contaminants and their ability to act as oxidizing or reducing agents. 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. Thermo Fisher Scientific manufactures analytical instruments, laboratory equipment, consumables, and software under the Thermo Scientific, Fisher Scientific, and Nalgene brands, among others. The company was founded in 2006, and is headquartered in Waltham, MA. What's in the Box? Thermo Scientific Orion conductivity cell Cable