The YSI 005564 is a combination (full-cell) pH electrode for the YSI 556 portable pH meter and has a glass bulb, sealed gel reference, storage bottle with storage solution, and inserts in the 5563 probe module and cable assembly. A pH electrode is commonly attached to a pH meter to measure the pH of a substance such as water, food, beer, or wine in lab, industrial, and food applications. This electrode has a glass bulb for use in highly corrosive environments and high temperatures. The sealed gel reference eliminates refilling. The electrode inserts into the 5563 probe module and cable assembly. The electrode has a pH range of 0 to 14. The electrode comes with a storage bottle, storage solution, a cleaning certificate, and instructions.

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 milli voltage 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 data logger to assist in temperature measurement.

YSI manufactures instruments, sensors, and software for environmental water quality monitoring and testing. The company, founded in 1948, is headquartered in Yellow Springs, OH.

What’s in the Box?

• YSI 005564 pH electrode
• Storage bottle with solution
• Instruction sheet
• Cleaning certificate