Description :
Mini Air Ions Tester Negative Oxygen Anion Concentration Detector Aeroanion Meter
The air anion tester is special design for measuring the concentration of positive and negative ions.
Suit to measure negative ion generator, air purifier, negative ion hair dryer, air conditioning... and high concentration of the ion source,
but it can't be used to testing the negative oxygen ions from natural environment and leather, cloth, powder etc.

Using methods :
1. Turn the switch to "ON" position.
2. Keep your thumb in contact with the front square metal plates, then make the rear square metal towards the air anion generator.
The closer to the air anion generator in test, the higher reading of the tester shows.
3. If it shows without symbols in reading, it means Positive ions.
or show " -", it means Negative ions.
4. Don't touch the rear square metal of the tester in measuring, otherwise it would be inaccurate readings.
5. Before measuring, keep the switch in " off " position.

Notes :
This tester is a kind of high impedance tester, pay attention to avoid being affected by the damp when use and storage, or it may cause wrong reading and works unstable when testing, at this time, you can use hair dryer to dry it or put in the sun for several hours.
Specification :
LCD Display : Max reading 1999
Measuring range : 1 x 104 --- 1999 x 104 (ions / cc)
Resolution : 1 x 104 (ions / cc)
Power source : 1.5V x 2LR44button battery
Size : 8 x 3 x 1cm/3.15 x 1.18 x 0.39inch
Package Includes :

1 x Air Ions Tester
4 x LR44 Button Battery