Tag Archives: Fake UV Sterilizer

Fun with Willemite! Shortwave UVC Mineral Test For UV Sterilizers


People often ask which is the best shortwave UV light for minerals. Let’s reverse this question. What is the best mineral to test a UVC lights wavelength? That’s easy! Let’s check it out! Willemite is a zinc silicate mineral (Zn2SiO4) and a minor ore of zinc. It is highly fluorescent (green) under shortwave ultraviolet light. […]