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       CODE: 022.281-018 Buy the DOT:Download/CD-ROM
TITLE(s): LABORATORY TESTER (plastic-synth.)
Examines, measures, photographs, and tests synthetic fiber samples to facilitate quality control
of forming, treating, and texturing processes, performing any combination of following tasks: Dips
several twisted threads in melted wax and directs stream of cold water over threads to congeal wax.
Slices threads crosswise, using microtome. Dissolves wax, using solvent, and positions thread sample
on microscope slide. Inserts slide in microscope and photographs sample, using standard
microphotographic equipment and techniques. Develops, prints, and labels photographs. Analyzes
photographs to determine whether structure and other characteristics of thread meet plant standards.
Determines tensile strength of thread samples, using device that draws material between two jaws
until breakage occurs. Measures cross-sectional area of thread samples, using planimeter. Immerses
samples in water, corrosives, or cleaning agents to detect shrinkage or damage. Places thread
samples in dye bath to evaluate permeability of dye and exposes samples to controlled light source
to ascertain fade resistance. Prepares and submits reports of findings to production personnel to
facilitate quality control of product.
GOE: 02.04.01 STRENGTH: L GED: R4 M3 L3 SVP: 6 DLU: 77
ONET CROSSWALK: 24505D Textile Science Technicians
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