The combined electrode consists of a needle indicating electrode and a silver-chloride reference electrode. It serves as a measuring element for ORP meters and water quality testers, designed to measure the ORP of solutions or water. Suitable for use in water sources, aquariums, hydroponics, laboratories, spas, swimming pools, and other water systems. Features: - Widely used for testing ORP in solutions or water - High-quality laboratory ORP electrode probe - Compatible with most ORP meters and controllers equipped with BNC or Q9 connectors - Filled with saturated solution, suitable for printed circuit board applications and online ORP measurement in chromium-containing wastewater treatment - Made from environmentally friendly materials, safe for human contact, with excellent conductivity Specifications: - Model: ORP-101 - Type: Laboratory Electrode Probe - Sensing Element: Sensitive glass bulb - Measurement Range: 0 to ±1999 mV - Accuracy: ±5 mV - Temperature Range: 5 to 70°C - Electrode Potential: 245–270 mV (at 15–30°C) - Reference Electrode Internal Resistance: ≤10 kΩ - Electrode Stability: ±8 mV over 24 hours - Indicator Electrode: High conductivity type - Connector Type: Q9 BNC (straight) - Cable Length: 70 cm (27.5 inches) - Item Size: 155 x 20 x 20 mm (6.1 x 0.8 x 0.8 inches) - Color: As shown in image - Material: Plastic Package Contents: 1 x ORP Electrode Probe Note: The package includes only the items listed above. Other accessories are not included. Due to lighting effects and monitor settings, the actual color of the item may vary slightly from the image. Measurement tolerances may vary by ±1–3 cm.