By American Assoc. of Textile Chemists and Colorists

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5 7 a Coronal means crownlike, and refers to scales in which the visible scale edge completely encircles the fiber. Imbricate means overlapping, and refers to scales in which the visible scale edges overlap like shingles on a roof and cover only a part of the fiber circumference. c The term wool is used here to represent clothing wool and not carpet wool. d The longitudinal/epidermal appearance of cashmere fiber while generally fainter than that of sheep’s wool is not as faint as some specialty fibers such as camel and alpaca.

5 An eyewash/safety shower should be located nearby and an organic vapor respirator should be readily available for emergency use. 1000 of January 1, 1989). 5). 3. Terminology 5. 1 For definitions of technical terms, refer to the Glossary of AATCC Standard Terminology in this TECHNICAL MANUAL. 1 Compound microscope with matched objectives and eye pieces to achieve magnifications of 100-500X and equipped with a polarizer and analyzer. 2 Glass slides and cover glasses. 3 Dissection needles. 4 Scissors (small) and tweezers (fine).

3 Observe the fiber characteristics as seen in traverse section and classify into four general classes. 4 Fibers with surface scales. 3). All of the keratin fibers listed except silk are included in this group. 3). Compare with the characteristics in Table I, photographs in the appendix of this method, and known specimens of hair fibers. 7). 5 Fibers with Cross Markings. 3. 3). Compare with characteristics as given in Table II, photographs and known specimens of vegetable fibers. 8). 9. 7. 6 Convoluted Fibers.

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