• pH Meter - Measure Acidity or Alkalinity of the Soil
• TDS Meter- Include EC, TDS, and Temp Function, TDS don't need to calibrate.
• Premium Quality- High Accuracy and Quick Reading
• Easy to Use - Battery Included, Light Weighted, Easy to Read,
• Humanized Design - Hand-held Design for Portability and Convenience
• Wide Application -Water Purification Applications, Aquaculture, Hydroponic, Pool & Spa, Colloidal Silver, Water Treatment, and so on
• Includes - 1 x pH Meter, 1 x TDS Meter, 1 x Protective Case

pH Meter Tech Spec

• Full measurement Range: pH 0 - 14
• Resolution: 01 pH
• Accuracy: 05 pH
• Calibration: Three Points Automatic Calibration Button
• Power Supply: 2 x 1.5V LR44 Button Battery
• Dimension: 1"x 1.2" x 0.7" 
• Weight: 8 oz

Article: The VIVOSUN pH Meter: Calibration and Troubleshooting

TDS Meter Tech Spec

• TDS: 0 - 9990 ppm (parts per million)
• Degrees Fahrenheit: 0 - 176.0°F
• Conductivity: 0 - 9990 µs/cm
• Accuracy: ±2%
• Dimension: 0.6" x 1.18" x 0.55" 
• Weight: 8 oz
• Tips: TDS = Total Dissolved Solids, which is any salt, metal, or mineral in the water. Note: This ppm meter can't test seawater