Test white board eraser

Test white board eraser
1. Write some thing with all color sketches and see if you can erase
2. Use a permanent marker and try erasing
3. Leave the writing on the board for a week or so and try erasing
4. It's common to carry coffee / soft drinks / water for meetings. If either of them spills, see if you can use the same eraser.
5. Test with different varieties of boards.
6. Try erasing the things written by a piece of chalk