Overview
YUEFENG PHS-3E is a laboratory acidity meter with LCD display function. The instrument can measure ph value, mV (ORP) value and temperature value, of which pH Measurement range is -2~ 18.0pH, resolution is 0.01pH; mV Measurement range is -1999~ 1999mV; Temperature Measurement range is 0.0~ 99.9 ℃.
Features
1. Multi-Parameter measurement: pH, mV (ORP) and temperature values can be measured.
2. High resolution: pH resolution is 0.01pH, mV resolution is 0.1mV, Temperature resolution is 0.1 ℃.
Automatic identification: Automatically identify three standard buffer solutions (4.00pH, 6.86pH, 9.18pH).
4. High input Impedance: Input Impedance ≥ 1 × 10 ^ 12Ω, stable measurement.
5. LCD display: clear and intuitive readings.
Principle
PHS-3E laboratory acidity meter uses pH composite Electrode measurement of hydrogen ion activity in solution and converts it into corresponding pH value or mV value for display. The instrument adopts two-point calibration method and uses standard buffer solution Counter electrode to calibrate to improve measurement accuracy. The temperature sensor is used for measurement of solution temperature and can perform temperature compensation for pH measurement.
Applications
Laboratory, scientific research, education, water quality testing, chemical production, Food processing, environment monitoring
Standards
Instrument level: 0.01 level
Steps
1. Connect pH Electrode and temperature sensor.
2. Turn it on and warm up.
3. Prepare standard buffer solutions (e.g. 4.00pH, 6.86pH, 9.18pH).
4. Electrode immersed in the first buffer, the first point calibration after the reading is stable.
5. Electrode cleaning after immersion in the second buffer, the second point calibration.
6. After the calibration is completed, the Electrode is immersed in the test solution for measurement.
7. Read and record pH, mV, or temperature values.
Notice
• Electrode should be checked before use and made sure it is in good condition.
• Electrode bulbs should be fully immersed in the solution for calibration and measurement.
• Electrode cleaned with deionized water after each measurement.
• Electrode should be stored in a suitable protective solution when not in use.
The temperature of the tested solution should be within the range of 5 to 60 degrees Celsius.
• Avoid long-term use in strong acids, alkalis or corrosion solutions.
• Regularly use a standard buffer solution to check the accuracy of the instrument.
