MG-410 is a free-flowing, dry magnetic particle powder which fluoresces under ultraviolet light (wavelength of 365 nanometers). It bright fluorescent yellow-green color provides a vivid contrast against metal parts when viewed in UV black light in a darkened area, although a totally darkened inspection area is not required due to MG-410’s intense brightness.

MG-410 is intended to be suspended in a water or oil carrier. In water, conditioning agents such as WA-2B or WC-1 are required to improve particle suspension and mobility, and to provide better test-piece wetting.