CircleSafe 778A is an aerosol can of fluorescent yellow-green magnetic particles in water media. It is designed to be used with UV-A light (see Spectroline UV lamps here) to detect very fine discontinuities found in finished products and critical, highly stressed component parts. CircleSafe’s ultra-bright, ultra-sensitive particles allow for excellent MPI testing. CircleSafe is packaged in a carbon dioxide propellant for odor-free, fume-free, non-combustible NDT inspection.