Overview
QIWEI PH-220 is a pen pH meter with a Measurement accuracy of 0.01 pH. Glass electrode is built-in, compact, easy to carry, simple to operate, suitable for field or field testing, can display PH value and temperature value at the same time, cost-effective.
Features
1. Measurement accuracy, resolution of 0.01 pH.
2. Glass electrode, stable performance.
3. Compact size, light weight, easy to carry.
4. Easy to operate, suitable for on-site rapid inspection.
5. PH value and temperature value can be displayed at the same time.
Support three point calibrated (4.01, 6.86, 9.18).
7. Cost-effective.
Principle
The pH meter senses the concentration of hydrogen ions in the solution through the built-in Glass electrode to generate a corresponding potential difference. The instrument converts this potential difference into the pH value and displays it. At the same time, the built-in temperature sensor measures the temperature of the solution and performs temperature compensation for the pH value to improve the measurement accuracy.
Applications
Tap water source monitoring, aquaculture, printing and dyeing, environmental protection, Eletroplating, agriculture, beverages, R & D institutions
Steps
1. Turn it on and make sure the instrument is clean.
2. Use standard buffers (e.g. 4.01, 6.86, 9.18) for three-point calibrating as needed.
3. Immerse the Electrode in the solution to be tested and shake it gently.
4. After waiting for the reading to stabilize, record the displayed pH value and temperature value.
5. After use, clean the Electrode with distillation water and store it properly.
Notice
Please read the instructions carefully before use.
• Electrode balls are fully immersed in the solution when calibrating and measuring.
• Electrode contact with strong acids, alkalis or corrosion substances to prevent damage.
• Electrode should be cleaned with distillation water in time after use, and keep Electrode moist.
• Do not use under conditions exceeding the specified Ambient Temperature (0~ 50 ° C).
• When not in use for a long time, please remove the battery.
• Measured value is abnormal, check Electrode status or calibrate.
