edding 750 - a paint marker with a good heat resistance\n- For permanent labelling even on dark and transparent materials, e.g. metal, glass and plastic.\n- Waterproof, heat resistant up to 400 °C, lacquer-finish, low odour and extremely lightfast.\n- The colours yellow, white, silver, orange, brown, violet, pink and light blue are still visible up to 1000 °C.\n\nShake the pen with the cap on. Remove the cap and place the nib of the pen onto a piece of cardboard. Carefully pump it up and down until ink flows into the nib.