Film takes no ink by absorption, so everything sits on the surface. Water-soluble ink wipes away with a damp cloth and lets a sheet be reused, and it smudges under a hand. Permanent ink stays put and ends the sheet's working life. Decide which before writing on a set of masters. See permanent markers, craft markers and laminating pouches.

OHP & Fine Tip Markers

OHP Pens for Transparencies

Shop OHP pens for overhead transparencies, acetate sheets, presentations, teaching and clear marking.