Antistatic ionizer is a device that removes excess of ions, both positive (cations) and negative (anions), from the sample, weighing device's components and the environment. 

Imbalance of cations and anions in the air causes unwanted electric interaction (attraction and repulsion) between objects located close one to another. This may negatively influence weighing instrument operation. Affected operation as a results gives greater repeatability error, often also greater error of indication. 

There are 2 versions of RADWAG-manufactured antistatic ionizer: