China professiona negative ion tester with best quality    

Specification:

product showing:

Testing:

Features:

Small size, easy to carry. For easy detection of the natural minerals, ceramics and their products and accurately calculate the number of its negative ions occur.
Measurement: As the general environment there is the Central Standing Committee surge signal interference, affect the accuracy of the measurement results, we recommend the best way to measure the measurement ten times, delete whichever is the average maximum and minimum values.

This product is made in China.MOQ=1 piece

Package:

If you are interested in our negative ion tester, or have any further questions, please contatc us with no hesitate.