Best Silver Chloride Electrode 3M

The Thermo Scientific Orion 9107WMMD triode pH probe is a gel-filled combination electrode that measures pH and temperature with ATC, has an epoxy body for durability, a wick junction, and a waterproof BNC connection with a 3 m cable and an 8-pin Mini-DIN connector. The 9107WMMD is gel-filled for low maintenance, and measures pH and temperature with automatic temperature compensation (ATC). The permanently-gelled Ag/AgCl (silver/silver chloride) electrolyte produces less noise (unwanted voltages) than gold or purely silver electrodes, and requires no refills. The electrode also has a patented internal reference to mimimize drift and equilibrium time, and a waterproof Bayonet Neill-Concelman (BNC) connection with a 3 m cable and an 8-pin Mini-DIN (Deutsches Institut für Normung) connector. This electrode is frequently used in aqueous solutions in the lab and field.

pH range is 0 to 14 (+ or – 0.02 with ATC), temperature range is 0 to 90 degrees C (32 to 194 degrees F) and body dimensions are 110 mm (length) x 12 mm (diameter), with a 3 m cable. Buffer and storage solutions are sold separately.

pH electrodes are used in pH meters and testers to measure the acidity or alkalinity of a substance. They are often constructed of glass, which 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.

Thermo Fisher Scientific manufactures analytical instruments, laboratory equipment, consumables, and software under the Thermo Scientific and Fisher Scientific brands, among others. The company was founded in 2006 and is headquartered in Waltham, MA.

The Sensorex series S651CD combination electrode is waterproof so it can be submersed and mounted in tanks, sewer lines, flumes, and other water testing applications, and its flat surface sensor resists becoming coated, is self-cleaning in turbulent environments, and is encircled by four raised pins to protect against breakage. The sensor is housed in a cartridge that detaches for replacement when a new sensor is needed. This combination electrode contains both the measuring half-cell and the reference half-cell to minimize electrostatic interference and provide consistent readings. The electrode has double-junction reference to protect against silver wire contamination and to help prevent clogging when testing dirty water and solutions with heavy metals or organic compounds. Its chlorinated polyvinyl chloride (CPVC) body is heat resistant, has better corrosion resistance than PVC, and is sealed and filled with an acrylamide polymer electrolyte solution gel that protects the reference electrode for durability and minimal maintenance in dirty industrial applications.

The electrode is available in a pH model with a measurement range of 0 to 14 pH, and in an oxidation reduction potential (ORP) model with a measurement range of +/-2,000mV. It withstands temperatures up to 75 degrees C (167 degrees F) at pressures up to 100 pounds per square inch gauge (psig), and temperatures up to 80 degrees C (176 degrees F) at pressures up to 85 psig. It is 3″ long with a 0.9″ diameter at the sensor, and has a Bayonet Neill-Concelman (BNC) receptacle for use with a Sensorex S653 cable assembly (sold separately) for attaching to meters with a BNC connection. pH electrodes measure the acidity or alkalinity of a substance. ORP electrodes, also known as redox electrode, measure the ability of aqueous solutions to act as oxidizing or reducing agents. Both pH and ORP electrodes are commonly used by researchers, manufacturers, and hobbyists in hydroponics, aquaculture, agriculture, and winemaking, among other applications.

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.

Sensorex manufactures pH, oxidation-reduction potential (ORP), and conductivity sensors, as well as other analytical sensors and accessories. The company, founded in 1972 and headquartered in Garden Grove, CA, meets International Organization for Standardization (ISO) standard 9001:2008, and is compliant to the European Union directives on Waste Electrical and Electronic Equipment Directive (WEEE) and Restriction of Hazardous Substances (RoHS).