UVP® Blak-Ray® fluorescent ink is suited for use on skin, fabric and similar porous or textured surfaces. Simple to use - inks come ready made. Won't gum up - stamp pads stay cleaner longer. Small amounts of ink are used with stamp pads making them a very economical choice as a readmission ink. Inks are formulated to fluoresce brightly under UVP's longwave ultraviolet lamps. Readmittance type inks are designed for use at amusement parks, social gatherings and sporting events. Inks are non toxic, fast drying and non transferable. Use for textile marking, readmittance, coding, theatrical, amusement, promotional, inventory control.