Where do negative ions exist?

Small atoms in your environment. Negative ions exist in the air around you with a smaller amount of positive ions. They are measured in pcs/cc. Negative ion counts in the atmosphere usually range between 0 and some hundred per cc. A large amount of negative ions exist where water splashes such as waterfalls and fountains. A large amount of negative ions can be found where water splashes such as waterfalls and fountains. You can enjoy more negative ions in your room with a negative ion generator (ionizer). 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!