Thank you for purchasing the Apera Instruments PH20 Pocket pH Tester Kit. Please read this
manual carefully before use in order to properly use and maintain the product.
For video tutorials, please go to support.aperainst.com
Table of Contents
1. General Introduction .............................................................................................................................. 1
2. What’s in the Kit? ................................................................................................................................... 2
3. Preparation before Use .......................................................................................................................... 2
4. Calibration .............................................................................................................................................. 2
5. Measurement ......................................................................................................................................... 3
6. Probe Cleaning ........................................................................................................................................ 4
7. Probe Storage ......................................................................................................................................... 4
8. Parameter Setting ................................................................................................................................... 4
9. Technical Specifications .......................................................................................................................... 4
10. Troubleshooting Guide ........................................................................................................................... 5
11. Battery Replacement .............................................................................................................................. 6
12. Warranty ................................................................................................................................................. 6
ATTENTION
• Water droplets are added during production to maintain the moisture of the probe. This is normal
practice and should not be attributed to used product.
• Never use the product when it’s freezing cold. Let it warm to room temperature before using.
• The latest PH20 Tester comes with an upgraded probe structure equipped with a sensor shield that
prevents glass bulb breakage from accidental collisions (see picture below). You can remove the shield
when cleaning the sensor and put it back on afterwards.
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