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Ref. No.: lSO/ R 247 - 1962 (E)
IS0
I N T ER N Afl O NA L O R G A N l ZATl 0 N F 0 R STA N D A R D I2 AT IO N
IS0 RECOMMENDATION
R 247
DETERMINATION OF ASH IN RAW NATURAL RUBBER
1st EDITION
March 1902
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a meinber of 1SO.
For each individual country the only valid stariciard is the riational standard of that country.
Printed in Switzerland
be obtained through the national standards organizations.
Also issued in French and Russian. Copies to
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BRlEF HISTORY
The IS0 Recommendation R 247, Detrrminution of Ash in RQN‘ Natural Rubber, was
drawn up by Technicai Committee ISOIT’C 45, KuhD~.r, the Secretariat of which is held
by the British Standards Institutioa (E3.S.F.).
Work on this question by the Technical Committee began in 1948 and led, in 1958, to
the adoption of a Draft IS0 Recommendation.
In December 1959, this Draft TSO Recommendation (No. 340) was circulated to all
the IS0 Member Bodies for enquiry. It was approved, subject to a few modifications of
an editorial nature, by the follouing Member Bodies:
Australia FI ungaiy Sweden
Austria im!ia Suitzcrland
Israel United Kingdom
Burma
Chile Japdi’ U.S.A.
Colombia Mexico IJ . S .§. R.
Czechoslovakia Netherlands Yugoslavia
France Portugal
Spain
Germany
One Member Body opposed the approval of the Draft : Italy.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0
Council, which decided, in March 1962, to accept it as an IS0 RECOMMENDATION.
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E
IS0 / R 247 - 1962 (E)
IS8 Recommendation March 1962
DETERMINATION OF ASH iN RAW NATURAL RUBBER
1. SCOPE
This method is intended for the determination of ash in rat\ natural rubber. in order that the
method will give a satisfactory rcsu
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