Page 203 - Bresciani Paper Conservation

BRESCIANI
Materiali ed Attrezzature
per il Restauro e la Conservazione
LIGHT MONITORING LIGHTCHECK®
LightCheck® is a new tool that enables evaluation of the quantity of light received by an artefact during exhibition. It will accurately indicate cumulative light exposure even when exposed to only dim light (such as 50 lux) for a few months. Each LightCheck® strip is made of a plastic substrate with a light sensitive coating. The colour of the LightCheck® coating changes during exposure. A calibration has been established between the colour and the luminous exposure. While the resulting colour change is proportional to the luminous exposure, 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 strips of differing sensitivities have been introduced:
LightCheck® LCU(Light Check Ultra) is made of a light sensitive coating on a substrate. The colour of LightCheck® changes during exposure to light. A calibration has been established between the colour and the luminous exposure. The luminous exposure given in the colour reference scale corresponds to the potential damage of the lighting conditions on site
LightCheck®LCS(Light Check Sensitive)
When a LightCheck® strip is exposed close to the object, 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 easily determined by comparison with the coloured reference scale supplied with the product.
Item
Description
Q.ty/unit
71010
LightCheck
®
Ultra LCU
1 with 5 strips
LightCheck
®
Ultra LCS
BRESCIANI s.r.l. - via Breda 142 - 20126 Milano - tel. 02.27002121 r.a. - fax 02.2576184 www.brescianisrl.it - e-mail: info@brescianisrl.it Pag.9/23