Features: Accurate Water Quality Analysis: Our multi-function conductivity pen provides precise testing of water quality, ensuring you drink safe and pure water. Quick and Efficient: Our conductivity pen provides rapid results, allowing you to assess water quality in no time and take necessary actions if needed. Versatile Compatibility: Suitable for drinking water, ultrafiltration water purifiers, and functional water machines, our pen caters to various water sources. Durable Construction: Made with reusable good-quality materials, this water testing pen is built to last, ensuring long-term reliability and accurate readings. Customer Service: With customer satisfaction as our first priority, we offer a satisfaction service for all of our merchandise. If you have any problems, please contact us in time. We will give you replies as soon as possible. Specifications: Material:Plastic Size:124*18mm Notes:Please allow slightly errors due to manual measurement and different monitors. 1*Water Quality Testing Pen Set