Pen with Invisible Ink

  • 10.95 $
  • Availability: In Stock
  • Sku: SPT-SHT-UVM-1

The markings remain invisible until examined under an ultraviolet light source. *** IMPORTANT*** May not work well on some white papers, recommended for use on colored paper.

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The markings remain invisible until examined under an ultraviolet light source.

*** IMPORTANT***

May not work well on some white papers, recommended for use on colored paper.