ISO 125:1977

Title missing - Legacy paper document

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-1976
• Technical Committee: ISO/TMBG - Technical Management Board - groups
• Drafting Committee: ISO/TMBG - Technical Management Board - groups
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 01-Jan-1982

Standards Content (Sample)

INTERNATIONAL STANDARD 125
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INTERNATIONAL ORGANIZATION FOR STANDARDIZATION .MEXLIYHAPOLIHAJl OPTAHI13AUMR Il0 CTAHLIAPTH3AU~.ORGANlSATlON INTERNATIONALE DE NORMALISATION
Rubber - Natural latex - Determination of alkalinity
Caoutchouc - Latex naturel - Détermination de l'alcalinité
Second edition - 1977-11-15
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Ref. No. IS0 125-1977 (E)
w UDC 678.031.5 : 543.241.2
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Descriptors : rubber, latex, natural rubber, chemical analysis, determination of content, alkalinity.
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Price based on 2 pages
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FOR E WOR D
IS0 (the International Organization for Standardization) is a worldwide federation
of national standards institutes (IS0 member bodies). The work of developing
International Standards is carried out through IS0 technical committees. Every
member body interested in a subject for which a technical committee has been set
up has the right to be represented on that committee. Internationa) organizations,
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governmental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated
to the member bodies for approval before their acceptance as International
Standards by the IS0 Council.
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International Standard IS0 125 was developed by Technical Committee ISO/TC 45,
Rubber and rubber products. This second edition incorporates the modifications set
out in a draft Amendment circulated to the member bodies in August 1976.
This Amendment was approved by the member bodies of the following
countries :
Austria Hungary Spain
Belgium India Sweden
Brazil Italy Turkey
Bulgaria Netherlands United Kingdom
Canada New Zealand U.S.A.
Poland U.S.S. R.
France
Germany Romania
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No member body expressed disapproval of the Amendment.
This second edition cancels and replaces the first edition (i.e. IS0 125-1974) which
had been approved by the member bodies of the following countries :
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India Sri Lanka
Australia
Austria Ireland Sweden
Korea, Rep. of Switzerland
Belgium
Malaysia Turkey
Chile
Netherlands United Kingdom
Czechoslovakia
New Zealand U.S.A.
Egypt, Arab Rep. of
France Romania U.S.S.R.
Germany South Africa, Rep. of
Hungary Spain
No member body had expressed disapproval of the document.
0 Intarnational Organization for Standardization, 1977
Printed in Switzerland

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INTERNATIONAL STANDARD
IS0 125-1977 (E)
Rubber - Natural latex - Determination of alkalinity
1 SCOPE AND FIELD OF APPLICATION
5 APPARATUS
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This International Standard specifies a method for the
The following apparatus is required when electrometric
determination of the alkalinity of natural rubber latex
titration is used :
which contains preservative agents and which has been
5.1 pH meter, equipped with glass electrode and saturated
submitted to some type of concentration process.
calomel cell, and capable of being read to 0,02 unit.
The method is not necessarily suitable for latices from
natural sources other than Hevea brasiliensis or for
synthetic rubber latices, compounded latex, vulcanized
5.2 Glass electrode, of a type suitable for use in solutions
latex or artificial dispersi
...