Practical measurement of air ions

(1) Both ion counts measurement Generally, both positive/negative ion counts change every second in the atmosphere. The ratio of positive and negative ions is a very important factor to understand an ionization tendency. Thus it is ideal to measure both positive/negative ion counts. (2) Simultaneous measurement of both ions Simultaneous measurement of both ions provides more reliable data. Digital Air Ion Counter, Good for R&D and product promotion! Easy operation, Light Weight & Compact design, Many functions. Show in graph form, Data storage!