The UV-visible Paint-Riter+ Ultra Violet makes an invisible paint mark that glows bright blue when viewed with a UV or black light, making it ideal for security, quality control, tamper-proofing, and anti-counterfeiting processes. The permanent invisible liquid paint dries quickly to provide long-lasting, weather- and wear-resistant marks. Features and Benefits Makes clear, invisible marks that illuminate bright blue when viewed with an ultraviolet or black lightInvisible paint formula is ideal for security, theft-prevention, and quality controlXylene-free paint reduces user health risks making for a safer marking tool.Fast drying formula reduces smearingDura-Nib medium bullet tip resists wear to provide long marking lifeDurable metal barrel and clip cap reduce breakage and stores easily in pocketMarking range: -50°F to 150°F (-46°C to 66°C)Made in U.S.A. INDUSTRY USES Industrial manufacturingQuality controlSecurity and theft preventionConstruction SURFACE USES MetalPlasticGlassPipes and tubesCeramicsTools and equipment View all Markal Paint-Riters here Part Number: MRK-97054