73.060.30 - Chromium ores

Specifies general instructions concerning reagents, apparatus, sample, procedure, calibration graphs and test report.

The method is intended to be carried out simultaneously with the determination of other constituents of the same analytical sample so that the contents of the other constituents can be calculated on the basis of the absolutely dry ore. ISO 6129 should be read in conjunction with ISO 6629.

The method is applicable to products having a calcium content greater than 0,1 % (m/m) and a magnesium content greater than 3,0 % (m/m). Should be read in conjunction with ISO 4297. Specifies principle, reagents, apparatus, procedure and expression of results.

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.

The molecular absorption spectrometric method (A) is applicable to products having silicon contents from 0,05 to 0,5 % (m/m), the gravimetric method (B) is applicable to products having silicon contents from 0,5 to 15 % (m/m). ISO 5997 should be read in conjunction with ISO 4297. Specifies among other things principle, reagents, apparatus, procedure, spectrometric measurement (method A only) and expression of results.

The method is applicable to products having a phosphorus content of 0,002 to 0,1 % (m/m). ISO 6127 should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, procedure and expression of results. Includes a warning to the dangers involved in the use of perchloric acid and hydrofluoric acid.

The method is applicable to a concentration range of 1.5 to 20.0 % (m/m) of aluminium. ISO 8889 should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, sample, procedure and expression of results.

The method is applicable to products having a chromium content greater than 7 % (m/m). Should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, procedure and expression of results.

Specifies methods for taking samples of chromium ores to be used at the places of dispatch and acceptance of ores for determining the chemical composition and moisture content of a consignment. The methods are applicable to both the manual and mechanical sampling of natural or processed ores. Details of the hammer and shovel method are given in annex A.

Specifies methods of preparing samples of chromium ores for determining the chemical composition and moisture content of a consignment. The methods are applicable to natural or processed ores.

Specifies methods of preparing samples of chromium ores for determining the chemical composition and moisture content of a consignment. The methods are applicable to natural or processed ores.

Specifies methods for taking samples of chromium ores to be used at the places of dispatch and acceptance of ores for determining the chemical composition and moisture content of a consignment. The methods are applicable to both the manual and mechanical sampling of natural or processed ores. Details of the hammer and shovel method are given in annex A.

The method is applicable to a concentration range of 1.5 to 20.0 % (m/m) of aluminium. ISO 8889 should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, sample, procedure and expression of results.

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.

The molecular absorption spectrometric method (A) is applicable to products having silicon contents from 0,05 to 0,5 % (m/m), the gravimetric method (B) is applicable to products having silicon contents from 0,5 to 15 % (m/m). ISO 5997 should be read in conjunction with ISO 4297. Specifies among other things principle, reagents, apparatus, procedure, spectrometric measurement (method A only) and expression of results.

The method is applicable to products having a chromium content greater than 7 % (m/m). Should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, procedure and expression of results.

The method is applicable to products having a calcium content greater than 0,1 % (m/m) and a magnesium content greater than 3,0 % (m/m). Should be read in conjunction with ISO 4297. Specifies principle, reagents, apparatus, procedure and expression of results.

The method is intended to be carried out simultaneously with the determination of other constituents of the same analytical sample so that the contents of the other constituents can be calculated on the basis of the absolutely dry ore. ISO 6129 should be read in conjunction with ISO 6629.

Specifies general instructions concerning reagents, apparatus, sample, procedure, calibration graphs and test report.

The method is applicable to products having a phosphorus content of 0,002 to 0,1 % (m/m). ISO 6127 should be read in conjunction with ISO 6629. Specifies principle, reagents, apparatus, procedure and expression of results. Includes a warning to the dangers involved in the use of perchloric acid and hydrofluoric acid.