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UDC 678.01 Ref. No.: EO/ R 171 - 1961 (E)
IS0
ORG A N IZATl ON FOR STAN D AR D I Z AT I O N
1 N TERN AT1 ON A L
IS0 RECOMMENDATION
R 171
P LAST1 CS
DETERMINATION OF BULK FACTOR
OF MOULDING MATERIALS
1st ED IT I ON
February 1961
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 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 171, Determination of Bulk Factor of Moulding Materials,
was drawn up by Technical Committee ISO/TC 61, Plastics, the Secretariat of which is held
by the American Standards Association, Incorporated (ASA).
Work on this matter which the Technical Committee had begun since 1954, came to
an end in 1956, with the adoption of a proposal as a Draft IS0 Recommendation.
On 28 November 1958, the Draft IS0 Recommendation (No. 186) was distributed to
all the IS0 Member Bodies and was approved, subject to some editorial amendments, by
the following Member Bodies:
v’
Australia Hungary Romania
Austria India Spain
Israel
Belgium Sweden
Bulgaria Italy Switzerland
Burma Japan Turkey
Czechoslovakia Netherlands United Kingdom
France Poland U.S.A.
Germany Portugal U.S.S.R.
No Member Body opposed the approval of the Draft.
IS0 Recommendation was then submitted by correspondence to the IS0
The Draft
Council, which decided, in February 1961, to accept it as an IS0 RECOMMENDATION.
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ISO/ R 171 - I961 (E)
IS0 Recommendation R
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