Description
GS5-E ORP electrode for GroStar meters enables reliable redox-potential measurement of nutrient solutions and other liquids when connected to compatible GroStar instruments. The electrode works with GroStar GS1, GS2 and GS4 meters; upon connection the instrument automatically recognises the probe and switches into ORP measurement mode. A platinum sensor combined with double-junction construction delivers stable ORP readings across the range –1000 to 1000 mV. The reference system employs an Ag/AgCl electrode with gel KCl electrolyte, while an integrated 30 kΩ thermistor covers sample temperatures from 0 to 50 °C. The polycarbonate housing measures 75 × 35 × 35 mm and attaches quickly without tools. This electrode from manufacturer APERA Instruments is supplied with a 12-month manufacturer warranty and is intended for hydroponic, agricultural and laboratory applications that require ORP monitoring alongside pH. Double-diaphragm design enhances measurement stability across varied sample matrices commonly encountered in nutrient-solution analysis.
This article is part of pH electrodes & sensors, in pH & electrochemistry.
Key features
- Pack size: 1 pc
- ORP measuring range: –1000 to 1000 mV
- Sensor: Platinum with double junction
- Reference electrode: Ag/AgCl, gel KCl
- Temperature range: 0 to 50 °C
- Dimensions: 75 × 35 × 35 mm
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Questions about GS5-E ORP Electrode for GroStar Pocket Testers
What is this article?
GS5-E ORP Electrode for GroStar Pocket Testers is the article on this page. Luminix Health distributes APERA Instruments for laboratory use. It sits in pH electrodes & sensors, inside pH & electrochemistry, in Lab instruments.
A pH electrode is a glass membrane and a reference. It is a consumable: the glass ages, the junction clogs, and the reading drifts. A refillable electrode and a gel electrode differ in how they are maintained. The connector has to match the meter. The electrode, not the meter, is usually what is wrong.
A pH meter is a voltmeter on a glass electrode. The voltage tracks hydrogen-ion activity, and the electrode is converted to pH only after it is adjusted with buffers of known value. Conductivity measures how well a solution carries a current, which for dilute salts tracks concentration. Dissolved oxygen and titration are further electrodes on the same idea: a sensor, a standard, and a reading that is only as fresh as the calibration. Buffer values and chemical identity sit on PubChem. Accreditation of the calibration laboratory is the field of BELAC and EURAMET.
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The category is pH & electrochemistry. The sub-category is pH electrodes & sensors. The catalogue is Lab instruments.
Shelves beside this one are pH meters, Conductivity meters & cells, Dissolved oxygen & multiparameter meters, Titrators & electrochemistry systems and pH & electrochemistry accessories.
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