The edding 8750 paint marker’s ink is heat-resistant up to 300°C. If writing needs to be able to withstand higher temperatures, we recommend using the edding 750, 751 or 780 paint markers instead. The paint markers contain a permanent, opaque ink and can be used on most materials. The ink is heat-resistant up to 400°C and is still visible up to 1000°C in the following colours: yellow (005), orange (006), brown (007), violet (008), pink (009), light blue (010), white (049) and silver (054).