The combined electrode consists of a platinum needle indicating electrode and a silver-chloride reference electrode. It serves as a measuring element for ORP meters and water quality testers, used to measure the ORP of aqueous solutions and water. Suitable for use in water sources, aquariums, hydroponics, laboratories, spas, swimming pools, and other water systems. Features: - Widely used for testing the ORP of aqueous solutions and water - High-quality laboratory ORP electrode probe - Compatible with most ORP meters and controllers equipped with a BNC or Q9 connector - Filled with saturated KCl colloidal solution - Suitable for printed circuit board applications 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 Type: Sensitive Crystal Ball - Measurement Range: 0 to 1999 mV - Accuracy: 5 mV - Temperature Range: 5 to 70C - Electrode Potential: 245270 mV (at 1530C) - Reference Electrode Internal Resistance: 10 k - Electrode Stability: 8 mV/24h - Indicator Electrode Conductivity: Good - Connector Type: Q9 - BNC Orientation: Upright - Cable Length: Approximately 70 cm (27.5 inches) - Dimensions: Approximately 155 x 20 x 20 mm (6.1 x 0.8 x 0.8 inches) - Color: As shown in image - Material: Plastic Package Includes: 1 x ORP Electrode Probe Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting effects and display differences may cause slight variations in color between the image and the actual item. Measurement tolerances may vary by 13 cm.