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Displaying 6701 - 6710 of 7888
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.
Publisher :
ISO
Status :
Published
Published Date :
1986-10-22
ICS Code(s) :
83.040.10
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.
Publisher :
ISO
Status :
Withdrawn
Published Date :
1986-10-15
ICS Code(s) :
79.100
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.
Publisher :
ISO
Status :
Published
Published Date :
1986-10-15
ICS Code(s) :
73.060.10
Rubber, raw styrene-butadiene — Soap and organic acid content — Determination
Publisher :
ISO
Status :
Withdrawn
Published Date :
1986-10-15
ICS Code(s) :
83.040.10
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.
Publisher :
IEC
Status :
Revised
Published Date :
1986-10-14
ICS Code(s) :
23.120
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).
Publisher :
ISO
Status :
Published
Published Date :
1986-10-08
ICS Code(s) :
67.080.01
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.
Publisher :
ISO
Status :
Withdrawn
Published Date :
1986-10-08
ICS Code(s) :
73.060.10
Ethylene for industrial use — Sampling in the liquid and the gaseous phase
Describes the procedure and the precautions to be taken in drawing representative samples of ethylene in the liquid phase stored at -100 °C and in the gaseous phase, for the purpose of their analysis excluding the determination of water content, other polar components and hydrocarbons heavier than C5. In an annex a diagrammatic representation is given of a system for the removal of the portion of…
Publisher :
ISO
Status :
Withdrawn
Published Date :
1986-09-24
ICS Code(s) :
71.080.10
Iron ores — Determination of sodium and/or potassium contents — Flame atomic absorption spectrometri...
Publisher :
ISO
Status :
Withdrawn
Published Date :
1986-09-24
ICS Code(s) :
73.060.10
Fruit and vegetable products — Determination of 5-hydroxymethylfurfural (5-HMF) content
The method comsists in preparing of a test solution by adding water to test portion, in the case of products containing more than 10 mg of free sulphur dioxide per litre, adding of acetaldhyde, then adding of p-toluidine and barbituric acid solution to an aliquot potion of the test solution, thus forming a red coloration by reaction with 5-hydroxymethylfurfural present, and spectrometric…
Publisher :
ISO
Status :
Published
Published Date :
1986-09-17
ICS Code(s) :
67.080.01