The presented study was dedicated to the comparison between wool and polyamide fibres, dyed with
metal-complex (gryfalan) dyes being analogous regarding type and concentration, with the use of UV
eVis microspectrophotometry. The affinity of used dyes to the particular fibre type as well as the influence
of fibre polymer on the quality of spectra obtained were subjected to evaluation. The absorbance
spectra, obtained with the use of a 20/20 PV™ microspectrophotometer (CRAIC Technologies) for single
fibres selected from 15 woolen and 15 polyamide fabrics, were studied. The results indicated that at the
same concentration of dye, the dyes' affinity is higher for polyamide fibres than for wool. Thus, the
conduction of the examination of single wool fibres in the visible and in the UV-A range can be recommended,
and in the case of analysing fibres with similar microscopic colour, the chemometric
treatment seems to be an effective way of discrimination.