LightCheck®
is a new tool that enables evaluation of the quantity of light received
by an artefact during exhibition even under dim light such as 50 lux for
a few months.
LightCheck® is made of a light sensitive coating on a substrate. The colour of LightCheck® changes during exposure. A calibration has been established between the colour and the luminous exposure. This colour change is proportional to the luminous exposure although other factors such as temperature, pollutants and type of light (spectral distribution) may have a small effect. The luminous exposure given in the colour reference scale corresponds to the colour changes produced with a continuous exposure under a quartz halogen lamp at 500 lux , 23 °C, 55 % RH.
Two LightCheck® strips have been introduced, the first to monitor the exhibition of light sensitive objects (Category II according to the table below):
LightCheck® Ultra "LCU"
and the second for more durable objects (Category III according to the table below):
LightCheck® Sensitive "LCS"
LightCheck® is exposed close to the object and its colour will change depending on the cumulative luminous exposure it receives. The LightCheck® must be placed in such a position that it will receive the same exposure as the artefact that is under observation/ investigation. Equivalent luminous exposure can then be determined by comparison with a coloured reference scale.
If you need further advice or assistance on lighting or display recommendations, this is available at cost.
For more information on LightCheck
Call : Lightcheck +44 (0) 1283 520365 or +44 (0) 20 7267 7555
Fax : +44 (0) 1283 520412 or +44 (0) 20 7267 1555