UV Invisible Permanent Marker Pen - thick nib

(Ex. VAT £3.29)
Product code: UVI1002
Weight: Various within options

Thick nib Invisible ink marker PEN with high quality exterior grade invisible permanent UV ink. The ultimate in permanent ink. Nothing will get this stuff off. Choice of 2 colours that dry completely clear but fluoresce under uv either white blue or red. Totally invisible under ambient light.

Note that the red ink requires a UV light source of 365 to 380nm

The blue ink will fluoresce under any UV blacklight from 365 to 410nm

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(Ex. VAT £11.63)