Q: Why do positive emitters on DC Ionizers erode faster than negative emitters?
A: It is very easy to summarize in a simple “physics lesson”:
The positive emitter erodes faster than the negative emitters because the positive emitter is "bombarded" by electrons when it is running and the negative emitter is not. This is the same for any DC corona product. Though the positive emitter "absorbs" a negative molecule, it truly is a bombardment/impact to the emitter; it is not absorbed gently. On a molecular level, it sounds worse than it is, but that's what causes the difference.