Textiles — Quantitative chemical analysis — Part 7: Mixtures of polyamide and certain other fibres (...
ISO 1833-7:2006 specifies a method, using formic acid, to determine the percentage of polyamide fibre, after removal of non-fibrous matter, in textiles made of binary mixtures of polyamide and cotton, viscose, cupro, modal, polyester, polypropylene, chlorofibre, acrylic or glass fibre.
It is also applicable to mixtures with wool and animal hair, but when the wool content exceeds 25 %, the method…
Aluminium oxide used for the production of aluminium — Determination of particles passing a 20 micr...
ISO 23202:2006 sets out a wet-sieving procedure for the determination of the percentage by mass of particles of smelter-grade alumina passing a 20 micrometre aperture sieve.
This procedure is applicable for aluminas with a minus 20 micrometre content up to 4 %.