Mi-Glow® Powders and Concentrates Fluorescent & NonFluorescent (Dual) Mi-Glow® 634 Fluorescent & NonFluorescent (Dual) red particle designed for use with visible light. Mi-Glow® 601 Posted in: Fluorescent & NonFluorescent (Dual), Uncategorized Mi-Glow® 634 Posted in: Fluorescent & NonFluorescent (Dual), Mi-Glow® Powders and Concentrates