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 and water. Suitable for use in water supplies, aquariums, hydroponics, laboratories, spas, swimming pools, and other water systems. Features: - Widely used for testing ORP in solutions and 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 processing and online ORP measurement in chromium-containing wastewater treatment - Made from environmentally friendly materials with good conductivity and safe for human contact Specifications: - Model: ORP-101 - Type: Laboratory Electrode Probe - Sensing Element: Sensitive glass bulb - Measurement Range: 0 to 1999 mV - Accuracy: ±5 mV - Operating 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/24 hours - Indicator Electrode: High conductivity type - Connector Type: Q9 BNC, straight plug - 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 picture - Material: Plastic Package Contents: 1 x ORP Electrode Probe Note: - The package includes only the items listed above; other accessories are not included - Lighting and display differences may cause slight color variations between the image and the actual item - Measurement tolerances may vary by ±1–3 cm