Ink Intelligent is a small company, set up by Professor Andrew Mills of the University of Strathclyde, Department of Pure & Applied Chemistry and is based in Glasgow, UK.

The company has created inks which provide information on the surfaces they come into contact with and our first commercial product is a pen with an ink that - in combination with light sufficient to activate the surface - responds to most surfaces that exhibit photocatalytic activity.

These photocatalytic surfaces include most self-cleaning tiles, paints, concrete and glass.

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 occurs under defined irradiation conditions.

Two types of photocatalyst indicator pen exist are currently available for purchase: the Rz pen (blue to pink) and the MB pen (Blue to colourless); although the latter is not suitable for use on hot (greater than 35 degrees Celsius) surfaces.

We, at Ink Intelligent, are dedicated to the development and subsequent commercialisation of a wide range of other inks, including those for the detection of: carbon dioxide, humidity, ammonia and volatile amines and oxygen.