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Judy Schwender wrote:
I have been
asked about something called either a "textile fading card"
or a "textile saving card". This was described as a felt-type card that indicates when a textile should be removed to avoid fading. Does anyone have any information about this? Hello (again)
All!
The LightCheck
Cumulative Illumination Dosimeter is a new product developed in the
European Union to provide a (fairly) accurate indication of how much light
has fallen on an object. Two styles have been developed, differing only in
light sensitivity. We are now stocking the more sensitive indicator
strip (LCU), and expect the companion strip shortly. The LightCheck strip are
not only more sensitive than the various Blue Wool series, but they also
indicate the amount of light absorbe by comparing the colour change to a chart.
The colour chart accompanying each set of strips is calibrated to the dye
lot. Full information at www.keepsafe.ca
That said... The LightCheck strip is merely another tool, useless without
someone to make some critical judgements about how much is too much! The
LCU strip will completely change colours from new (blue) to exhausted (pink) in
response to a few weeks of bright window light- this makes it an excellent
indicator for an antique etching, or an early photographic print, but a thousand
times too sensitive for a deeply coloured polyester curtain.
While a Blue Wool indicator might not fade too quickly to be useful, which
one should be used? How much damage is done before you notice colour fading in
the textile? Without more specific information, it's like shooting a gun in the
dark- you may or may not hit your target, but you may also do a lot of
collateral damage.
js Jerry Shiner
Keepsafe Systems / Microclimate Technologies International Supplies and Solutions for Microclimate and Oxygen-free display and storage www.keepsafe.ca www.microclimate.ca 1 800 683-4696 |