2oz. bottle of black light ink. Goes on clear and appears blue under a black-light.
Characteristics: A waterproof ink with excellent adhesive qualities while it remains moist in a pad for very long periods of time. It is highly recommended for successfully marking electronic parts. It is also approved by the Department of Agriculture for use on food packaging.
"Invisible" inks are those which cannot be seen with the naked eye but fluoresce when viewed under an ultraviolet ("black") light.
Surfaces: All semi-porous and non-porous surfaces (i.e.: glossy paper, painted surfaces, metal, hardwood, electronic parts, etc.)
Drying Time: 30-60 seconds
Suggested application: Natural rubber stamp with Mark II or Opaque pad