Manufacturer: Hanna Instruments
Brand: Hanna Instruments
Model: HI5311
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The Hanna Instruments HI 5311 electrode is a silver/silver chloride (Ag/AgCl) double-junction half-cell reference electrode for use with half-cell measuring electrodes (sold separately) in titration and other water testing applications. Titration is the gradual adding of measured amounts of a substance with an unknown concentration into another substance with a known concentration until the reaction between them is complete. The double-junction reference protects against silver wire contamination and helps prevent clogging when testing dirty water and solutions with heavy metals or organics. The electrode has a ceramic junction for durability in demanding applications. Its glass body withstands corrosive materials and solvents, and is refillable, allowing the filling solution composition to be adjusted to suit the sample requirements. It withstands temperatures from -5 to 100 degrees C (23 to 212 degrees F). The electrode is 120mm long and has a 1m cable with a 4mm banana jack connector for attaching to compatible meters. Reference electrodes are used in conjunction with measuring, also known as indicating, electrodes to complete electrochemical cells so that measurements can be made. 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, whi...
