Precision work: The ORP BNC tester is made of high-quality material and has a long service life. Easy to install and use: The BNC tester is simple to install and can be used with ORP connectors. Quality service: If you have any questions about our products, please . We provide excellent customer support. Replaceable ORP electrode with 50 ohm BNC socket and protective cap. Ideal tool for general water applications such as drinking water, domestic water, rainwater, aquariums, tanks, ponds, pools, spas, and more. Widely used to test the ORP of water and solutions. Reliable laboratory ORP electrode probe. Compatible with most ORP meters and controllers featuring a BNC Q9 connector. 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 no harm to the human body and excellent conductivity. Designed for water quality measurement in swimming pools, spas, fish ponds, water sources, aquariums, hydroponics, laboratories, seawater, marine/saltwater fish tanks, and other water systems. Probe Type: Probe Range: 0 to ±1999 mV Accuracy: ±5 mV Temperature Range: 5 to 70°C Electrode Potential: 245–270 mV (15–30°C) Reference Electrode Internal Resistance: ≤10 kΩ Electrode Stability: ±8 mV per 24 hours Indicator Electrode Conductivity: Good Electrode Plug Type: Q9 BNC, upright Electrode Cable Length: 300 cm Color: As shown in photo Material: Plastic Package Contents: 1 x ORP Electrode Note: Other items not included. Due to lighting reflections and display differences, the item color may vary slightly from the image. Measurement error allowance: ±1–3 cm.