Which edding inks are resistant to alcohol and therefore to most disinfectants? edding’s ink expertise explains this and also reveals a few tips and tricks.
Weatherproof tests are vital for determining if marker ink will stand up to light and water. See how edding tests their weatherproof pens and markers here.
Lightfastness is an important quality for markers to have, so they are tested to see how fade resistant they are. Here is how the test works.