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UDC 674.243
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IS0
INTERN AT1 ON A L O R G A N I Z AT I ON FOR STAN DARD IZATl ON
IS0 RECOMMENDATION
R 822
PARTICLE BOARDS
DETERMINATION OF DENSITY
1st EDITION
September 1968
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 822, Particle boards - Determination of densiry, was drawn up by
Technical Committee ISO/TC 89, Boards made from wood or other ligno-cellulosic fibrous materials,
the Secretariat of which is held by the Deutscher Normenausschuss (DNA).
Work on this question by the Technical Committee began in 1963 and led, in 1965, to the
adoption of a Draft IS0 Recommendation.
In May 1966, this Draft IS0 Recommendation (No. 960) was circulated to all the IS0 Member
Bodies for enquiry. It was approved, subject to a few modifications of an editorial nature, by the
following Member Bodies :
Austria Israel Sweden
Belgium Korea, Rep. of Switzerland
Canada
Netherlands U.A.R.
Chile New Zealand United Kingdom
Colombia
Norway U.S.S.R.
Czechoslovakia Poland Yugoslavia
Finland Portugal
France Romania
Germany South Africa,
India Rep. of
Ireland Spain
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 September 1968, to accept it as an IS0 RECOMMENDATION.
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ISO/R 822-1968 (E
IS0 Recommendation R 822 September 1968
PARTICLE BOARDS
DETERMINATION OF DENSITY
1. SCOPE
This IS0 Recommendation describes a method of determining the density of particle boards, defined
in IS0 Recommendation R 820, Particle boards - Definition - Classification.
2. PRINCIPLE OF THE METHOD
To determine the ratio of the mass, in grammes, of each test piece to its volume in cubic centi-
metres.
3. APPARATUS
See IS0 Recommendation R 821, Particle boards - Determination of dimensions of test pieces.
4. SAMPLING AND TEST PIECES
4.1 Sampling and cutting of the test pieces should be carried out in accordance
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