Applies to cobalt contents in the range 0,025 to 2,5 % (m/m). Specifies principle, reagents, apparatus, sampling and samples, procedure, expression on results, special cases and test report.
Oil of rosewood — Determination of alpha-terpineol content — Gas chromatographic method on packed co...
A small quantity of the oil is analyzed by gas chromatography under specified conditions on a packed column. The
alpha
-terpineol content is determined by using the internal standard method. Operating temperatures: Oven: isotherm between 120 and 150 °C. Injection system: about 170 °C. Detector: about 170 °C.
Oil of sandalwood — Determination of santalols content (in the form of their trimethylsilyl derivati...
A small quantity of the oil is analyzed under specified conditions. The santalols content is determined by using the internal standard method after their transformation into the corresponding trimethylsilyl ethers. Polyethylene glycol 20 000 is used as stationary phase.
Manganese ores and concentrates — Determination of sodium and potassium contents — Flame atomic abso...
The method is applicable to products having sodium contents from 0,02 to 1,0 % (m/m), and potassium contents from 0,08 to 3,0 % (m/m). ISO 7969 should be read in conjunction with ISO 4297. Specifies principle, reagents, apparatus, sampling, procedure and expression of results.
Animal feeding stuffs — Determination of calcium content — Part 1: Titrimetric method
The method is applicable to products having contents greater than 1 g/kg. It consists in ashing of a test portion, treatment of the ash with hydrochloric acid and precipitation of the calcium as calcium oxalate, dissolution of the precipitation in sulfuric acid and titration with standard volumetric potassium permanganate solution of the oxalic acid formed.
Chromium ores — Determination of total iron content — Titrimetric method after reduction
The method is applicable to chromium ores with iron content of 0,5 to 32 % (m/m). Should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, sampling and samples, procedure and expression of results. Includes a warning to the dangers involved in the use of perchloric acid and hydrofluoric acid.
