A 1927 German-language trade article on dyeing and printing acetate rayon (Acetatseide, e.g. Celanese) and its use for effect threads in mixed fabrics. It explains why acetate resists traditional dyes, describes direct acetate dyes, and gives dye recipes and print pastes for five sample fabrics combining viscose, natural silk, schappe and wool. The scan also includes two short pieces on vat (Indanthren) dyeing of schappe effect threads and on dyeing acetate rayon, the latter breaking off after its introduction.

A short 1929 article describing a quick dye-based test for telling viscose rayon from cuprammonium rayon. It briefly notes simple identification of nitro-cellulose and cellulose-acetate rayons, and the silver nitrate test for sulphur remnants in viscose. It then gives the procedure (a gallate of iron ink and eosine dye bath, with bluish red indicating viscose and pure blue indicating cuprammonium) and the ink formula.