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UDC 669.74
IS0
I N T E R N AT I O NA L O R G A N iZAT I O N FO R STA NP AR D I2 All O N
IS0 RECOMMENDATION
R 310
METHODS OF CHEMICAL ANALYSIS OF MANGANESE ORES
DETERMINATION OF HYGROSCOPIC MOISTURE
1st EDITION
July 1963
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The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized îherefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 310, Methods of Chemical Analysis of Manganese Ores-
Determination of Hygroscopic Moisture, was drawn up by Technical Committee ISO/TC 65,
Manganese Ores, the Secretariat of which is held by the Komitet Standartov, Mer i Izme-
ritel'nyh Priborov pri Sovete Ministrov SSSR.
Work on this question by the Technical Committee began in 1954 and led, in 1957,
to the adoption of a Draft IS0 Recommendation.
In October 1958, this Draft IS0 Recommendation (No. 243) was circulated to all the
IS0 Member Bodies for enquiry. It was approved by the following Member Bodies:
Austria Hungary Portugal
Bulgaria India Republic of
Burma Ireland South Africa
Chile Italy Romania
Czechoslovakia Japan United Kingdom
France Netherlands U.S.S.R.
Germany Poland
No Member Body opposed the approval of the Draft.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0
Council, which decided, in July 1963, to accept it as an IS0 RECOMMENDATION.
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IS0 Recommendation R 310 July 1963
METHODS OF CHEMICAL ANALYSIS OF MANGANESE ORES
DETERMINATION OF HYGROSCOPIC MOISTURE
1. GENERAL INSTRUCTIONS
1.1 In the following analysis, use a sample for chemical analysis of manganese ore which
has been crushed to a size not exceed
...