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The method specified is based on alkaline fusion of a test portion with a mixture of sodium carbonate and boric acid, dissolution of the melt in excess hydrochloric acid, reduction of the iron(III) with hydroxylammonium chloride, formation of the iron(II)-1,10-phenanthroline complex in a buffered medium (pH between 3 and 5), spectrometric measurement of the absorbance of the coloured complex at a…

The method specified is based on decomposition of a test portion by fusion with sodium carbonate and subsequent acidification with hydrochloric acid in the presence of boric acid to complex fluoride, formation of the molybdosilicic acid complex and selective reduction to the blue molybdosilicic acid complex with addition of tartaric acid to prevent interference from phosphate, spectrometric…

The method specified is based on dissolution of a test portion by fusion with a mixture of sodium carbonate, boric acid and sodium nitrate and subsequent acidification with nitric acid, formation of the molybdophosphate complex and extraction with a mixture of ethyl acetate and butyl acetate, followed by selective reduction of the complex to molybdenum blue by means of tin(II) chloride added to…

The principle of the method specified is to decompose a test portion by alkaline fusion and subsequent dissolution of the melt in excess of nitric acid, precipitation of iron(III) phosphate with ammonia solution, dissolution of the precipitate in nitric acid, formation of the molybdophosphate complex and extraction, followed by selective reduction of the complex to molybdenum blue, spectrometric…

Replaces the second sentence of subclause 3.5.2.3 as follows: The tube is filled with water and maintained at a height of about 250 mm measured from the upper surface of the test piece, and the level is maintained constant.

1.1 The principles and general practices set out in this document apply to all aspects of the environmental auditing activity. 1.2 With the wide interest in environmental auditing and the range of interested parties, a number of different types of environmental audits are required to satisfy the range of objectives and interests that exist. Note: There are a number of different types…

Gives general information about mathematical signs and symbols, their meanings, verbal equivalents, printing, notation of scalars, vectors and tensors and applications.

The method described is a simple, practical test which provides sufficiently accurate results with coating powders that lose up to about 2 % (m/m). Any water present in the product under test is included in the test result. For any particular application, the test method needs to be completed by supplementary information.

Applies to the measurement of the resistance to bending within the range 20 mN to 10 000 mN, but on some instruments down to about 2 mN. Does not apply to corrugated boards but may be applied to the components of such boards. The method is based on the beam principle and is applicable only to instruments which use a bending angle of 7,5° or 15°.

Defines an interface which is designed to enable the Electronic News Gathering (ENG) signals produced in a non-composite form to be sent through a parallel link between a camera and a portable video tape recorder (VTR) which are separated by about 5 m to 10 m, instead of being combined in a camera recorder.