How can I choose the best ESD ionizer, and how should I verify them?
Another important test for ionizers is to determine the balance of the ionization process. It is optimal if an ionizer produces and delivers a near equal amount of positive and negative air ions. If an ionizer is off-balance, it can actually charge a surface. The balance is measured using the same equipment described above, only in a slightly different mode. Most ionizers today are fairly stable in performance. They should be verified for performance probably quarterly or twice a year depending on your program requirements. For more information on testing ionizers and application of ionizers, contact the ESD Association as mentioned above. There is a Standard ANSI/ESD S20.20 and other information that could assist you for nominal dollars.