Surface active agents — Water used as a solvent for tests — Specification and test methods
The following requirements are specified: residue after evaporation, electrical conductivity, oxidizable matter expressed in oxygen content, absorbance at 254 nm and 1 cm cell optical path length: 0.01 units max., reactive silica content, surface tension. The corresponding methods of test are specified in an annex.
Light olefins for industrial use — Determination of molecular oxygen in gaseous phase — Electrochemi...
After sampling and preparation of the laboratory sample the gaseous test portion is passed at a given rate through an electrochemical cell previously calibrated with air or with standard mixtures containing a known amount of oxygen, and the concentration of oxygen in the gaseous olefin is measured. The method is applicable to light olefins having an oxygen content greater than 1 milliliter per…
Shall be used in conjunction with detail specifications concerning each pump model. Includes functional requirements, quality assurance provisions, qualification tests, acceptance tests, storage and packaging. A schematic summary is provided in the annex for easy reference to the contents of this International Standard.
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.
