Introducing our premium quality CLEAN DO30 Dissolved Oxygen Meter! As a factory, we take pride in offering the highest quality products to our customers. This highly accurate and durable meter allows for fast and easy detection of dissolved oxygen levels in any liquid, making it an ideal tool for scientific research, water quality testing, and more. With a large and easy-to-read LCD display, this meter provides instant and accurate readings with a simple push of a button. Our CLEAN DO30 Dissolved Oxygen Meter is designed to withstand the rigors of daily use, ensuring reliability and longevity. Invest in the best with our premium quality meter!