Our all-purpose invisible blue marking dye is solvent based and suitable for tracing clear organic solvents including ethanols and acetones. The dyeis water clear, abrasion resistant, and produces a brilliant blue fluorescent colour under black light activation. As a concentrate, this product can be used to mark metal, plastic, wood, concrete, marble, rocks, just about anything where you need a strong, incredibly durable invisible mark. Used extensively for sting operations, ownership, and product proof. These products produce a coating that is water clear on the desired object. Applied thin enough you will not even see the coating itself as the solvent base fully evaporates.
Sold in several sizes.
