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.
Fixed capacitors for use in electronic equipment. Part 4: Blank detail specification: Aluminium elec...
Supplementary document to the sectional specification and contains
requirements for style and layout and minimum content of detail
specifications. Applies to aluminium electrolytic capacitors with
non-solid electrolyte assessment level E.
Ferronickel — Determination of silicon content — Gravimetric method
Specifies a method for the determination of silicon in ferronickel in the range 0,2 to 4,0 % (m/m). Gives principle, reagents, apparatus, sampling and samples, procedure, expression of results and test report.
