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Ink Intelligent

Producers of the self-cleaning surface tester pen

NEW!!! Check out our new PAII Label here!

Watch a video guide how to determined three slightly different samples of photocatalytic paint:

NOTE – the photocatalytic activity determined by the inks was in accordance with an independent ISO NOx removal test.

Incredibly, Ink Intelligent have developed an ink which tests the activity of photocatalytic self-cleaning surfaces. The ink is dispensed from a pen instantly for accurate, convenient and fast results across a broad range of building products.

See our range  (http://www.iphotocat.com) of ISO test services for assessing photo-catalytic activity of any material.

A paper on our ink has made the Top 10 articles within the field on ScienceDirect.

The photocatalytic surfaces that can be tested with our ink include most self-cleaning tiles, paints, concrete, glass and fabric.  The ink not only reveals the presence of a photocatalytic coating, but also can provide a measure of its activity, via the speed of the colour change under defined irradiation conditions.

  • Testing solution in a pen, spray or as a label.
  • Low cost, accurate testing onsite
  • Fast results instantly delivered
  • Dedicated inks for different materials and activities
  • Based on over 40 years of experience
  • Industry recognised
  • Now in the final phase of becoming a new ISO standard
  • INTEC standard available

Choose the right pen for the right self-cleaning activity of your surface:

  • the low activity Validator pen ( colourless to gold/brown, usually used for ceramic tiles)
  • the medium activity Explorer pen (blue to pink, usually used for glass)
  • the high activity Visualiser pen (blue to colourless)


See our new videos on youtube Read about our technology on Wikipedia

The Visualiser pen on commercial self-cleaning tile

The Explorer ink on porous self-cleaning fabrics

The Validator pen  on commercial self-cleaning tile

The Visualiser pen on self-cleaning tile

All the pens on TiO2 sol-gel