Concluding part of H. Stadlinger's laboratory comparison of five commercial cellulose acetate rayons (Setilose, Celanese, French and German Rhodiaseta, and Aceta). It reports tests of dry, wet, boiled and knotting tensile strength, breaking elasticity, titer, sorting defects, gloss, color, ultraviolet fluorescence, dyeing with Cellit fast dyes, acetic acid content, viscosity and oil content. Micrographs of fiber cross-sections illustrate how ribbon-shaped filaments gave way to multi-lobed round forms and how this affects gloss. The article ends with eleven numbered conclusions on suitability for knitting, weaving and dyeing.

First part of a two-part article by consulting chemist H. Stadlinger comparing cellulose acetate rayon ('acetate silk') from several European makers. It first defends acetate against common criticisms (ironing, alkalies, strength) and lists its advantages: smoothness, luster, elasticity, water resistance, low specific gravity, dye affinity and sanitary properties. It then reports laboratory tests on samples from Belgian, British, French, German and Dutch producers, with tables of denier, twist, breaking strength, elasticity, gloss, fluorescence, dyeing, boiling behavior, acetic acid content, viscosity and oil coating, plus micrographs of fiber cross-sections.