Evaluation Procedure 11-2008
Spectrophotometer UV Energy Calibration Procedure
Optically Brightened Textiles
in 2007 by AATCC Committee RA36
1.1 This evaluation
procedure describes the use of the Textile UV Calibration Standard (TUVCS) for
inter-instrument calibration of UV content in the light source of spectrophotometers
for the purpose of measuring white or light to medium colored textiles that have
been optically brightened with a fluorescent whitening agent. UV absorption properties
of fluorescent whitening agents (FWAs) used for textiles differ from those of
FWAs used for plastics or other non-textile materials, necessitating the use of
a different reference standard than those typically used for these other materials.
This procedure is based on a semi-annually replaced textile calibration standard
that facilitates accurate UV content adjustment of the light source of spectrophotometers
for use with textile materials independent of instrument geometry and the methodology
used for adjusting the amount of UV energy in the instrument.
Copyright © 2014 American Association of Textile Chemists and Colorists, Research Triangle Park, N.C., USA
All rights reserved.
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