Nissen Markal Ultraviolet Paint Marker;

The UV-visible paint marker 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. Xylene-free paint reduces user health risks and eliminates California Proposition 65, EPA HAPS and SARA 313 concerns in the U.S.A. Fast drying formula reduces smearing. Dura-Nib medium bullet tip resists wear to provide long marking life. Durable metal barrel and clip cap reduce breakage and stores easily in pocket. Marking range: -50°F to 150°F (-46°C to 66°C). Made in U.S.A.