Invisible Ink In Stock Now

Blak-Ray:registered: black light invisible ink is made to fluoresce brightly under longwave UV light. The ink is non-toxic, fast drying and chlorine resistant. Used to control access and reentry to events and places. Choose from two colors, blue or green. Quantity is 16 ounces.

Use-benefits include...

• Ready-made - no mixing.
• Strong, long-lasting invisible ink.
• Blue or green color fluoresces brightly under longwave UV light.
• Chlorine resistant for swimming pool use.
• Ink mark invisible to the eye under ordinary light.
• Long lasting, with only small amounts used on stamp pads.