Petroleum products — Lubricating oils and additives — Determination of phosphorus content — Quinolin...
The method used is applicable to products containing any of the phosphorus compounds in normal use and having contents between O,OO5 and 1O,O % (m/m). The method is free from most interferences because the high insolubility of the quinoline phosphomolybdate precipitate leads to constant composition and freedom from most adsorbed or occulated impurities, especially from cations which would…
Iron ores — Determination of copper content — Flame atomic absorption spectrometric method
The method ist applicable to a concentration range of 0,003 to 1,0 % (m/m) of copper in natural iron ores, and iron ore concentrates and agglomerates including sinter products. Specifies principle, reagents, apparatus, sampling and samples, procedure, expression of results, and test report. ISO 4693 includes three annexes.
Rubber, raw and rubber latex — Determination of iron content — 1,10-Phenanthroline photometric metho...
Deals with the method given for uncompounded natural rubber and uncompounded synthetic rubbers which do not contain chlorine, and the corresponding uncompounding latices. Principle, reagents, apparatus, sampling and procedure, especially the preparation of the test piece are described. Special precautions and safeguards required are given.
Expanded pure agglomerated cork — Determination of moisture content
The described method consists of weighing a test sample followed by heating in specified condition and weighing again after cooling in a desiccator to ambient temperature. Compared to the first edition clauses 3 and 7 have been technically revised in this second edition.
Iron ores — Determination of aluminium content — EDTA titrimetric method
The method ist applicable to a concentration range of 0,25 to 5,0 % (m/m) of aluminium in natural iron ores, and iron ore concentrates and agglomerates including sinter products. Specifies principle, reagents, apparatus, sampling and samples, procedure, expression of results, and test report. Includes three annexes.
Performance and construction of electric circulating fans and regulators
Applies to fans for household and similar purposes and to fans for use in ships of electric motor directly driven fans and their associated regulators intended for use on single-phase a.c. and d.c. circuits not exceeding 250 V. This publication supersedes IEC 60174, 60175, 60176, 60307, 60385 and 60385A. The contents of the corrigendum of January 1992 have been included in this copy.
Fruits, vegetables and derived products — Determination of ascorbic acid — Part 1: Reference method
The method uses the molecular fluorescence spectrometry for the determination of the combined ascorbic and dehydroascorbic acid content. It consists in transforming ascorbic acid into dehydrascorbic acid using activated charcoal, and reacting this with o-phenylendiamine (OPDA).
Iron ores — Determination of sulfur content — Barium sulfate gravimetric method
The method is applicable to a concentration range of 0,01 bis 1,0 % (m/m) of sulfur in natural iron ores, and iron ore concentrates and agglomerates including sinter products. Specifies principle, reagents, apparatus, sampling and samples, procedure, expression of results and test report.ISO 4689 includes three annexes.
