EN ISO 9665:2000
(Main)Adhesives - Animal glues - Methods of sampling and testing (ISO 9665:1998)
Adhesives - Animal glues - Methods of sampling and testing (ISO 9665:1998)
Klebstoffe - Tierleime - Verfahren für Probenahme und Prüfung (ISO 9665:1998)
Diese Internationale Norm legt Verfahren zur Probenahme und Prüfung von Knochen- und Hautleimen in Pulver-, Granulat-, Perl- oder Würfelform fest. ANMERKUNG 1: Diese Verfahren lassen sich bei geeigneter Umrechnung des entsprechenden Leimtrockengehalts auch bei Tierleimen anderer Form anwenden. Zur Präzision der in dieser Internationalen Norm beschriebenen Prüfverfahren sind gegenwärtig keine Aussagen möglich, da Ergebnisse mit Beteiligung mehrerer Laboratorien nicht vorliegen. Wenn derartige Ergebnisse
verfügbar sind, werden bei der nächsten Überprüfung dieser Norm Angaben zur Präzision in die entsprechenden Prüfverfahren aufgenommen. ANMERKUNG 2: Einzelheiten zur Angabe der Präzision sind ISO 5725-1 : 1994 "Accuracy (trueness and
precision) of measurement methods and results - Part 1: General principles and definitions" zu entnehmen.
Adhésifs - Colles d'origine animale - Méthodes d'échantillonnage et d'essai (ISO 9665:1998)
La présente Norme internationale prescrit des méthodes applicables à l'échantillonnage et à l'essai des colles à base d'os et de peau se présentant sous forme de poudres, granulés, de perles ou de cubes.
NOTE 1 Ces méthodes peuvent être étendues pour tester d'autres formes de colles animales avec un calcul adéquat de la teneur en colle sèche équivalente. La fidélité de méthodes d'essai ci-après n'est pas connue parce que des données interlaboratoires ne sont pas disponibles. Lorsque des données interlaboratoires seront obtenues, des déclarations de la fidélité seront ajoutées aux méthodes d'essai correspondantes lors de la prochaine révision.
NOTE 2 Au sujet de la fidélité, il convient de se référer à l'ISO 5725-1:1994, Exactitude (justesse et fidélité) des résultats et méthodes de mesure - Partie 1: Principes généraux et définitions.
Lepila - Lepila živalskega izvora - Metode vzorčenja in preskušanja (ISO 9665:1998)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2001
1DGRPHãþD
SIST EN ISO 9665:1998
/HSLOD/HSLODåLYDOVNHJDL]YRUD0HWRGHY]RUþHQMDLQSUHVNXãDQMD ,62
Adhesives - Animal glues - Methods of sampling and testing (ISO 9665:1998)
Klebstoffe - Tierleime - Verfahren für Probenahme und Prüfung (ISO 9665:1998)
Adhésifs - Colles d'origine animale - Méthodes d'échantillonnage et d'essai (ISO
9665:1998)
Ta slovenski standard je istoveten z: EN ISO 9665:2000
ICS:
83.180 Lepila Adhesives
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ISO
STANDARD 9665
Second edition
1998-09-15
Adhesives — Animal glues — Methods
of sampling and testing
Adhésifs — Colles d’origine animale — Méthodes d’échantillonnage
et d’essai
A
Reference number
ISO 9665:1998(E)
ISO 9665:1998(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national standards bodies (ISO member bodies). The work of
preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which
a technical committee has been established has the right to be represented
on that committee. International organizations, governmental and non-
governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 9665 was prepared by Technical Committee
ISO/TC 61, Plastics, Subcommittee SC 11, Products.
This second edition cancels and replaces the first edition (ISO 9665:1993),
annex A of which has been updated.
Annex A of this International Standard is for information only.
© ISO 1998
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
ii
©
ISO ISO 9665:1998(E)
Introduction
The physical and chemical properties of animal glue depend firstly on the
nature of the raw material and secondly on the methods of processing. It is
not possible to develop any simple tests that will evaluate completely the
quality of a glue, or its suitability for a particular use. If, however, the glue is
made from a specific type of raw material by a usual method of
manufacture, then the following tests provide indications of the behaviour
of the glue in use, and may be taken as reliable criteria of quality.
Amongst these properties, the gel strength or viscosity, or both, are usually
included as general indices of quality. The foam test is of interest when the
glue is to be applied by special machines. Many of the physical tests (e.g.
gel strength, water absorption, foam) are of an empirical character, but if
the methods are carefully followed consistent results are obtainable which
will provide useful information both to the manufacturer and user.
Small samples of glue rapidly change their moisture content in response to
changes in atmospheric humidity. It is essential to keep the moisture
content of samples unchanged after they are taken. The use of sealed
waterproof storage containers is recommended for this purpose.
If a consignment undergoes long delays in transit, the average moisture
content may change between the times of sampling by producer and
consumer. To avoid this problem causing unnecessary disputes, it is
recommended that, when gel strengths or viscosities are reported, the
results of moisture content tests should also be given, if an accurate
comparison is required. Although the remaining tests listed in table 1 may
also be slightly affected by changes in moisture content, the differences
are not significant and it is not necessary to report moisture contents for
them.
iii
©
INTERNATIONAL STANDARD ISO ISO 9665:1998(E)
Adhesives — Animal glues — Methods of sampling and
testing
1 Scope
This International Standard specifies the methods to be used for sampling and testing bone and skin glues in the
form of powder, granules, pearls or cubes.
NOTE 1 The methods may be extended to the testing of other forms of animal glues by suitable calculation of the equivalent
dry glue content.
The precision of the test methods included in this International Standard is not known because interlaboratory data
are not available. When interlaboratory data are obtained, precision statements will be added to the corresponding
test methods at the next revision.
NOTE 2 For details of precision statements, refer to ISO 5725-1:1994, Accuracy (trueness and precision) of measurement
methods and results — Part 1: General principles and definitions.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this
International Standard. At the time of publication, the editions indicated were valid. All standards are subject to
revision, and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
ISO 3105:1994, Glass capillary kinematic viscometers — Specifications and operating instructions.
ISO 4788:1980, Laboratory glassware — Graduated measuring cylinders.
3 Definitions
For the purposes of this International Standard, the following definitions apply.
3.1 moisture content: The percentage loss in mass of the sample when a thin, evenly distributed film of the glue
is dried at 105 °C for 18 h – 1 h under standard conditions (see clause 6).
3.2 gel strength: A measure in arbitrary units of the rigidity modulus of a gel prepared and matured under
standard conditions (see clause 7).
©
ISO
ISO 9665:1998(E)
4 Sampling
4.1 General
The results of the analysis of glue carried out in accordance with this International Standard are limited in their
practical use by the degree to which the 1 kg test sample represents the whole consignment.
4.2 Initial selection of sample
The containers shall be selected from various parts of the consignment in such a manner that the widest
representation is obtained. The number of containers to be sampled shall be fixed by agreement between purchaser
and vendor. State the number of containers sampled in the test report.
From containers of 50 kg or more of glue, take a sample weighing not less than 1 kg when there is only one
container, and an increment of not less than 500 g from each container when there is more than one; from
containers of less than 50 kg of glue take a proportionate amount. This sample is called the preliminary sample.
Take appropriately sized samples by means of a sampling tube, scoop or similar tool to ensure that glue is taken
from the top, middle and bottom of the container.
Store these preliminary samples in clean, dry, airtight, non-absorbent containers until required.
NOTE — For further guidance, reference should be made to ISO 3951:1989, Sampling procedures and charts for inspection
by variables, for percent nonconforming, and ISO 8213:1986, Chemical products for industrial use — Sampling techniques —
Solid chemical products in the form of particles varying from powders to coarse lumps.
4.3 Final selection of sample
Mix the preliminary samples thoroughly and take one or more samples from the bulk, each weighing not less than
1 kg, and store them in clean, dry, airtight, non-absorbent containers. These samples shall be known as the
laboratory samples.
5 Preparation of test sample
5.1 Reduction of solid (powdered, pearl, cube and granulated) glue sample
Grind the sample by hand in a mortar, or alternatively in a laboratory disintegrator, of a type capable of grinding the
sample to a particle size of 3 mm or smaller. This sample is called the test sample. If necessary, quarter this sample
in the usual manner to bring the final mass to 500 g, taking care that a representative amount of all particle sizes is
included in the quartering. Keep the powdered samples so obtained in two air-tight containers, one container for the
test sample for moisture content (see clause 6) and the second container for all other tests.
The type of disintegrator used to grind the sample shall be agreed on between the purchaser and vendor because
different types of disintegrator generate different amounts of heat and have different effects on the moisture content
of the sample.
Because of the loss of moisture in grinding, take a separate sample for the moisture content test from the material
obtained by the preliminary breaking up, before the material is put through the disintegrator. This small separate
sample is then powdered by hand in a mortar and pestle, or cut with scissors, and is suitable for the moisture
content test. Make adjustment for the moisture content of the mechanically ground sample by comparison with the
hand-ground sample, which is considered as having the more reliable moisture content. By comparing the actual
moisture content found on the hand-ground sample with the moisture content of the mechanically ground sample,
the necessary adjustment to be made to the mass of the glue to be used in the various tests is determined by
calculation.
©
ISO
ISO 9665:1998(E)
Place all samples immediately into an air-tight container because even a small change in the moisture content will
affect the result of some of the tests; for example, an increase of 1 % moisture will result in a decrease of about
2,5 % in gel strength when determined on the Bloom-type gelometer.
5.2 Concentrations for solid glues
Table 1 summarizes the mass of glue and volume of water required for each of the tests described. Weigh the
specified quantity of the powdered sample for each test separately, rather than by working from a large quantity of
stock solution.
Table 1 — Glue concentrations
Clause Test Mass of glue Volume of water
g ml
6 Moisture content 1 10
7 Gel strength (see 7.5.2) 15 (7,5) 105 (105)
8 Comparison of gel strength 5 to 10 50
9 Viscosity 15 105
10 Softening point 37,5 75
11 Setting point 37,5 75
12 Foam 5 50
13 pH 1 100
14 Grease 10 15
16 Keeping quality 20 80
5.3 Dissolving solid glues
Weigh the test portion in a beaker and add the requisite amount of cold distilled water, stirring with a thin metal or
glass rod. Place a watch glass over the mouth of the beaker and allow the sample to soak for 2 h at a temperature
not exceeding 22 °C. Heat the beaker in a water bath adjusted to a maximum temperature of 70 °C for about
15 min, taking care that the final temperature of the solution when in the bath reaches, but does not exceed, 60 °C.
During this heating period, gently stir the solution with the rod. Take care that the glue is completely dissolved: this
may be ascertained by lifting up the beaker and inspecting its contents through the bottom. When the test portion
has all dissolved, remove the beaker from the water bath.
If the sample gives a gel strength above 400 g Bloom, prepare the gel at a concentration of 6,67 %, and note this
observation in the report. The results on a 6,67 % solution are sometimes expressed as “single Bloom”, and those
on a 12,5 % solution as “double Bloom”.
6 Determination of moisture content
6.1 Principle
A weighed test portion of the glue is maintained at 105 °C for 18 h and is then reweighed.
6.2 Apparatus
6.2.1 Stainless-steel dish, flat-bottomed, 70 mm in diameter and 15 mm high, weighing about 30 g, preferably
fitted with an aluminium cover for use when cooling and weighing.
©
ISO
ISO 9665:1998(E)
6.2.2 Oven, capable of being maintained at 105 °C – 1 °C.
6.2.3 Water bath.
capable of weighing to the nearest 0,01 g.
6.2.4 Balance,
6.2.5 Desiccator.
6.3 Procedure
Weigh into the tared dish (6.2.1), to the nearest 0,01 g, about 1 g of the test sample for moisture content (see 5.1,
third paragraph).
Add 10 ml of distilled water and allow the glue to soak. Place the dish on a warm water bath (6.2.3) so that the glue
is dissolved and a homogeneous solution obtained and leave there until most of the water has evaporated, giving a
uniformly thin film.
Transfer the dish to the oven (6.2.2) set at 105 °C – 1 °C, and allow it to remain there for 18 h – 1 h, during which
time the oven door shall not be opened. Remove the dish from the oven and, after allowing it to cool in a desiccator
(6.2.5), weigh it.
Carry out the determination in duplicate.
6.4 Expression of results
Calculate the moisture content (M) as a percentage by mass, using the equation:
mm-
M= · 100
m
where
m is the initial mass, in grams, of the test portion;
m is the mass, in grams, of the test portion after drying.
Express the result as the mean of the two values obtained in the duplicate determination.
6.5 Test report
The test report shall include the following information:
a) a reference to this International Standard;
b) all details necessary for the complete identification of the glue tested;
c) the number of containers sampled and the mass of glue taken from each container;
d) the results of the test, including the individual values, and any circumstances that may have affected the
results.
©
ISO
ISO 9665:1998(E)
6.6 Variation of gel strength and of viscosity with moisture content
If greater precision is required, adjust the result to allow for variations in the moisture content.
An approximate formula for the change in gel strength (DF) as a result of a ch
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.