YIERYI pH-2 Plus Test Pen – Accurate & Portable pH Meter

YIERYI pH-2 Plus Water Quality Test Pen – Accurate and Portable pH Meter The YIERYI pH-2 Plus Water Quality Test Pen is a precise and portable solution for measuring water pH levels. With a measurement range of -2.00 to 16.00 pH and an easy-to-read backlit LCD display, this device is perfect for ensuring water safety and quality in various applications. Its high-precision probe, automatic calibration, and reset functions make it a user-friendly tool for professionals and households alike. Note: Standard Package Includes 3 Buffer Powders The YIERYI pH-2 Plus Water Quality Test Pen comes with 3 pH buffer powders (pH 4.00, pH 6.86, and pH 9.18) for accurate calibration. These powders ensure that you can calibrate the device easily and maintain its precision over time. Key Features Wide pH Range: Measures from -2.00 to 16.00 pH, covering a broad spectrum of water conditions. High Accuracy: Advanced sensor technology ensures precise readings with a resolution of 0.01 pH. Automatic Cali