Sanjet BP71 Ink Cartridge, Invisible Blue The Sanjet BP71 Invisible Blue Ink is excellent for marking porous and non-porous substrates. The Sanjet BP71 dry time is typically instant to a few seconds but can take longer depending on the application and environmental conditions. Need black light to see the code. Can be used to deter product counterfeit.
Substrates The Sanjet BP71 invisible blue ink offers excellent adhesion on glass, plastic, metal, aluminum, concrete, pipe, glossy boxes, film, corrugated boxes, paper, and many other substrates.