YIERYI pH-2 Pro Test Pen – pH & Temp for Water Testing

YIERYI pH-2 Pro Water Quality Test Pen – Precise pH and Temperature Tester for Drinking Water, Pools, and Aquatic Applications The YIERYI pH-2 Pro Water Quality Test Pen is your ultimate tool for precise pH and temperature measurement. Designed for professional and household use, it delivers high-accuracy readings for water testing in a variety of environments. With its wide measurement range, automatic calibration, and user-friendly features, this device ensures water safety and quality like never before. Whether you need to monitor aquarium conditions, ensure the safety of drinking water, or maintain balanced pH levels in swimming pools, the YIERYI pH-2 Pro is the perfect solution. Note: (Includes 3 Buffer Powders) The YIERYI pH-2 Pro Water Quality Test Pen comes with 3 calibration buffer powders (pH 4.00, 6.86, and 9.18) to ensure accurate calibration and reliable readings.  Key Features pH Measurement Range: -2.00 to 16.00 pH, suitable for testing a wide range of water types. Te