Tag Archives: Willemite

Fun with Willemite! Shortwave UVC Mineral Test For UV Sterilizers

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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. […]