Lab Expo offers an ORP Tester designed with a platinum sensor for accurate measurements, ensuring high performance in a variety of testing environments. It features a pin connector for reliable connectivity. Our tester allows offset calibration, enabling adjustment of the display value to known standards for precise readings. Its auto-hold function freezes stable, final readings, making it easier to view and record data. An automatic power-off function helps conserve battery life. Our waterproof features offer robust protection against harsh conditions, ensuring reliable performance in challenging environments.