|Raffir Blue Uranium is a new special effect colour in the Raffir Metapol product line. The physical properties are the same as for the other Metapol products, but it stands out through its triple stage colour effect.
It has a plain pale colour indoor, but it changes to a strong blue colour immediately when exposed to direct sunlight (UV-light). While the material is in the light it charges up for the third stage, which is exposed in darkness, where it glows in a strong yellow green colour.
The strong blue colour and glow effect come from very fine pigments inside the material, which are harmless and non-radioactive. The blue colour has the strongest effect when the material is at low temperature, and the luminescent effect becomes stronger the more light it is exposed to before it is placed in darkness.