ISO/R 35:1957

Title missing - Legacy paper document

ISO/R 35:1957

Name:ISO/R 35:1957   Standard name:Title missing - Legacy paper document
Standard number:ISO/R 35:1957   language:English language
Release Date:31-Dec-1956   technical committee:ISO/TMBG - Technical Management Board - groups
Drafting committee:ISO/TMBG - Technical Management Board - groups   ICS number:
Ref. No. : ISO/R 35 - 1957 (E)
UDC 678.031
IS0
I N T E RN AT I O N A L ORGANIZATION FOR STAND AR D IZ AT I O N
IS0 RECOMMENDATION
R 35
DETERMINATION OF THE MECHANICAL STABILITY OF LATEX
1 st EDITION
COPYRIGHT RESERVED
IS0 Recommendations and IS0 Standards
The copyright of
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 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.

---------------------- Page: 1 ----------------------
BRIEF HISTORY
The IS0 Recommendation R 35, Determination of the Mechanical Sfability
of Lafex, was drawn up by the Technical Committee ISO/TC 45, Rubber, the
Secretariat of which is held by the British Standards Institution (B.S.I.):
The draft proposal put forward by the Secretariat was considered and
amended at the meetings held in London (1948), the Hague (1949), Akron (1950),
Oxford (1951) and Paris (1953).
On 28 August 1954, the Draft IS0 Recommendation proposed by the
i
Technical Committee ISO/TC 45 was submitted to all IS0 Member Bodies
and approved, subject to certain editorial amendments, by the following 25
(out of a total of 34) Member Bodies:
Netherlands
Austria
*New Zealand
Belgium
"Canada Pakistan
Denmark Portugal
Spain
Finland
Sweden
France
Switzerland
Hungary
India Union of South Africa
Ireland United Kingdom
Israel U.S.A.
*U.S.S.R.
Italy
Japan Yugoslavia
*Mexico
No Member Body opposed the Draft.
The Draft IS0 Recommendation was then submitted by correspondence
to the IS0 Council which decided, in March 1957, to accept it as an IS0
RECOMMENDATION.
* These Member Bodies stated that they had no objection to the Draft being approved.
Date of the first edition: April 1957.
-2-

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ISO/R 35 - 1957 (E)
IS0 Recommendation R 35 March 1957
DETERMINATION OF THE MECHANICAL STABILITY
OF LATEX
FOREWORD
This method of test is for natural rubber latex which contains preservative
agents, and which has been submitted to some type of concentration process.
The test is not necessarily suitable for latices from natural sources other than
Hevea brasiliensis or for latices of synthetic rubber, Compounded latex, vul-
canized latex or artificial dispersions of rubber.
1. SUMMARY
Latex is stirred at a high speed and the time required to produce obvious
signs of clotting is regarded as a measure of mechanical stability.
2. APPARATUS
A latex container consisting of a flat-bottomed cylindrical vessel either
127 mm or 5 inches high and having an inside diameter of either 56 mm to
60
...

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