Use of Whitener

Use of Whitener also does not affect the Addmen optical mark recognition software. But it depends on the MCQ examination policy what the examination body allows.

Most examination bodies discourage the use of whitener on OMR sheets. Technically, there is nothing to worry about using whitener to erase a wrong bubble filling to make the right one. The OMR software is designed to read dark marks. So, when the whitener is applied to a bubble, no dark mark is left at that place. There is no confusion in this situation. Still, the practice of using whitener on OMR sheets is not common. Here are the reasons:

     These are the reasons for not allowing the use of whitener on OMR sheets.