EN ISO 105-Z05:1998
(Main)Textiles - Tests for colour fastness - Part Z05: Determination of the dusting behaviour of dyes (ISO 105-Z05:1996)
Textiles - Tests for colour fastness - Part Z05: Determination of the dusting behaviour of dyes (ISO 105-Z05:1996)
Describes a method for the determination of the dusting behaviour of dyes.
Textilien - Farbechtheitsprüfungen - Teil Z05: Bestimmung des Staubverhaltens von Farbstoffen (ISO 105-Z05:1996)
Dieser Teil von ISO 105 legt ein Verfahren zur Bestimmung des Staubverhaltens von Farbstoffen fest.
Textiles - Essais de solidité des teintures - Partie Z05: Détermination du comportement des colorants au saupoudrage (ISO 105-Z05:1996)
Traite des mesures en bande de base qui sont également applicables à un sous-ensemble, tel qu'un amplificateur, ou une combinaison de sous-ensembles assemblés pour simuler une station terrienne de télécommunications par satellites.
Les méthodes de mesure sont décrites pour les caractéristiques suivantes:
- impédances d'entrée et de sortie (affaiblissement d'adaptation);
- niveaux d'entrée et de sortie;
- gain ou perte en bande de base;
- caractéristique amplitude/fréquence;
- caractéristique temps de propagation de groupe/fréquence;
- distorsion d'amplitude non linéaire;
- distorsion de gain et de phase différentiels.
Tekstilije - Preskušanje barvne obstojnosti - Del Z05: Ugotavljanje prašenja barvil (ISO 105-Z05:1996)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-1999
Tekstilije - Preskušanje barvne obstojnosti - Del Z05: Ugotavljanje prašenja barvil
(ISO 105-Z05:1996)
Textiles - Tests for colour fastness - Part Z05: Determination of the dusting behaviour of
dyes (ISO 105-Z05:1996)
Textilien - Farbechtheitsprüfungen - Teil Z05: Bestimmung des Staubverhaltens von
Farbstoffen (ISO 105-Z05:1996)
Textiles - Essais de solidité des teintures - Partie Z05: Détermination du comportement
des colorants au saupoudrage (ISO 105-Z05:1996)
Ta slovenski standard je istoveten z: EN ISO 105-Z05:1998
ICS:
59.080.01 Tekstilije na splošno Textiles in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL IS0
105-205
STANDARD
First edition
1996-09-01
Textiles - Tests for colour fastness -
Part 205:
Determination of the dusting behaviour of
dyes
Textiles - Essais de soliditk des teintures -
Partie 205: Dbtermination du comportement des colorants au saupoudrage
Reference number
IS0 105-ZO5:1996( E)
IS0 105-205: 1996(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide fed-
eration of national standards bodies (IS0 member bodies). The work of
preparing International Standards is normally carried out through IS0
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. IS0
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 IS0 105-205 was prepared by Technical Committee
ISO/TC 38, Textiles, Subcommittee SC 1, Tests for co/owed textjles and
colorants.
IS0 105 was previously published in thirteen “parts”, each designated by
a letter (e.g. “Part A”), with publication dates between 1978 and 1985.
Each part contained a series of “sections”, each designated by the re-
spective part letter and by a two-digit serial number (e.g. “Section A01 I’).
These sections are now being republished as separate documents, them-
selves designated “parts” but retaining their earlier alphanumeric desig-
nations. A complete list of these parts is given in IS0 105-AOI .
Annexes A and B of this part of IS0 105 is for information only.
0 IS0 1996
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 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
@ IS0 IS0 105=205:1996(E)
Introduction
The dustiness of dyestuffs is an important feature when considering as-
pects of hygiene, health and safety in the dyestuff-consuming industry. It
is important therefore that a reliable and reproducible method exists to
measure this property.
Although other methods for dust measurement exist, the method given in
this part of IS0 105 is both more representative of and comparable with
actual practice when handling dyestuffs. In respect of a comparison of
dyestuffs or the reliability of limits, it should be understood that the result-
ing value is not a specific value like density.
Details of reproducibility data are given in annex A.
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IS0 105-205:1996(E)
INTERNATIONAL STANDARD @ IS0
Textiles - Tests for colour fastness -
Part 205:
Determination of the dusting behaviour of dyes
2 Solid dyes are sold in different physical forms
1 Scope
(powdered, granulated, etc.). The particle-size distribution of
commercial products varies considerably. The mean particle
This part of IS0 105 specifies a method for determi-
diameter may be less than 50 pm or as much as several
nation of the dusting behaviour of dyes.
millimetres. The range of the particle-size distribution of a
solid dye may also be narrow or wide.
3 The particle-size distribution of dyestuff dust is largely
independent of the physical form of the dyestuff. Two typi-
2 Normative references
cal particle-size distributions for dyestuff dust are shown in
figure 1.
The following standards contain provisions which,
through reference in this text, constitute provisions of
this part of IS0 105. At the time of publication, the
editions indicated were valid. All standards are subject
to revision, and parties to agreements based on this 4 Principle
part of IS0 105 are encouraged to investigate the
possibility of applying the most recent editions of the
Dust is generated from a dye sample by means of a
standards indicated below. Members of IEC and IS0
dust-generating device, extracted from the dust-
maintain registers of currently valid International Stan-
bearing air by vacuum and conveyed to a detection
dards.
point, where the amount of dust generated is esti-
mated visually or determined quantitatively by a gravi-
IS0 105-AOI : I 994, Textiles - Tests for co/our fast-
metric or photometric method.
ness - Part A0 1: General principles of testing.
5 Apparatus
IS0 105-A03:1993, Textiles - Tests for co/our fast-
ness - Part A03: Gre y scale for assessing staining.
5.1 Balance, accurate to k 0,l g, for weighing out
the dye.
5.2 Dust-generating device, with filter holder and
3 Definition
connecting joints, and incorporating the following ad-
ditional components (see figures 2 and 3).
For the purposes of this part of IS0 105, the following
definition applies.
NOTES
3.1 dust: Particles of solid material dispersed in a
1 Instead of a filter and filter holder, other dust-detection
gas.
devices may be fitted to the apparatus, such as an impactor
or an optical particle counter.
NOTES
2 For information on sources of supply of the dust-
I Dyestuff dust is formed during handling operations such generating device and the filter, apply to the organizations
listed in clause 8 of IS0 105-A01 :I 994.
as dispensing, transferring, sprinkling, etc.
IS0 105-205: 1996(E)
@ IS0
84 % volume fraction
50 % volume fraction
--------------------------~-~~~~~
fraction
-----------
Particle diameter, pm
84 % volume fraction
2 60
ae
-
50 % volume fraction
--------_---__--------------
$ 50
Y-
c
E
4.
16 % volume fraction
--B-B----------
3 4 5 6 7 8 9 10
Particle diameter, pm
NOTE - The x-axis of both graphs has a logarithmic scale.
Figure 1 - Typical graphical representations of the amount of dyestuff dust (by volume) as a function of
the dust-particle diameter
IS0 105-205:1996(E)
Feedhopper
,--Timer-actuated slide valve
p-Verticaldroptube
Flow regulator
Flowmeter
Filter holder ---A
Dust chamber -\
.----_
-----.
Vacuum source
H Total fall height I) 815 mm
+5mm
h Dust chamber height 195 mm
k5mm
D Dust chamber diameter 0210mm
+5mm
d Drop tube diameter
047mm tl mm
1) Total fall height is measured from the top side of the slide valve plate
to the inside face of the dust chamber.
Figure 2 - Apparatus for dust determination
@ IS0
IS0 105-205: 1996(E)
Dimensions in millimetres
6 Procedure
Place the filter holder containing the filter (5.2.1) in the
dust-generating apparatus (5.2) and close it to give an
airtight fit. If the gravimetric method of assessment is
used, condition and weigh the filter before insertion
into the filter holder.
Filter holder
Using the balance (5.1) carefully weigh out
100 mesh,35
IO g + 0,l g of the dye and place it in the hopper at
the top of the apparatus. Start the timer (5.2.5) to
open the slide valve with a sudden action, allowing the
dye to drop down through the tube into the dust
chamber below.
Five seconds after the slide has opened, apply a vac-
uum to extract the dust from the chamber for collec-
tion on the filter (5.2.1) under the following conditions:
- air flowrate: 15 I/min;
Figure 3 - Filter holder - extraction time: 120 s (starting 5 s after dye has
dropped);
height of fall: (815 + 5) mm.
-
5.2.1 Filter, white, diameter (50 + 2) mm, capable of
trapping the dust quantitatively (pore size < 5 pm).
Using tweezers (5.6), carefully remove the dust-laden
filter from the holder and evaluate it by one of
a) For the gravimetric and photometric methods,
methods given in clause 7.
made of cellulose nitrate.
Clean the equipment thoroughly (5.5) after each test.
b) For the visual method, suitable glass-fibre filters
If the equipment is wet-cleaned, take particular care
can be used.
that it is dried thoroughly.
5.2.2 Vacuum pump, with a suction capacity of at
least 20 I/min.
7 Assessment of filter
5.2.3 Regulator, for adjusting the air flowrate.
5.2.4 Flowmeter, capable of monitoring air flowrate
7.1 Visual method
between IO I/min and 20 I/min.
Compare the dust-laden filter visually with the grey
5.2.5 Timer, for opening the slide valve to start suc-
scale for assessing staining (5.3) where Rating 1 =
tion, and for timing the period of suction.
very dusty and Rating 5 = no dust.
5.3 Grey scale for assessing staining, complying
Half-ratings may be used.
with IS0 105-A03.
NOTE - It is also possible to carry out a visual assessment
5.4 Analytical balance, accurate to k 0,Ol mg, for of colourless solid materials. However, special care has to
weighing the dust collected on the filter (5.2.1) be exercised in such cases. Black filters may be helpful, but
require separate preliminary trials. It is preferable to use the
(gravimetric assessment method), and/or photometer,
gravimetric or photometric method.
for extinction measurement of the dust collected and
dissolved in a suitable solvent (photometric assess-
ment method).
7.2 Gravimetric method
5.5 Cleaning device, e.g. brush or vacuum cleaner,
Weigh the dust-laden filter on the analytical balance
for cleaning the apparatus.
(5.4). Since with low-dusting products the mass of
dust is very small (< 1 mg), considerable errors are to
56 Tweezers, for re moving filter paper from holder
aiter dust generation. be expected with the gravimetric method. In such
@ IS0
IS0 105-205:1996(E)
cases, preference should be given to photometric In both quantitative methods (gravimetric and photo-
measurement. metric), the determination is based on the amount of
dust trapped on the filter. Since the amounts of dust
are measured in milligrams, in the gravimetric method
7.3 Photometric method
variations in the conditioning of the filter and electro-
static influences can lead to substantial errors. If the
For photometric measurement of the amount of dust,
amount of dust is determined by photometry, care
dissolve the dyestuff by shaking well the dust-laden
must, of course, be taken that the transmission is
filter in a suitable solvent at room temperature. When
measured on clear solutions. According to the experi-
a clear solution has formed, measure the transmission
ence of various laboratories, a reproducibility of about
with a photometer and read the corresponding
IO % (coefficient of variation) can be attained under
amount of dust off a previously prepared calibration
favourable conditions.
graph.
NOTE - Further details may be found in the literature. See 8.3 Scatter of results
for example annex B.
In some cases, scattering of the results may occur.
The main causes of this are:
a) factors specific to the apparatus, e.g.:
8 Expression of results
the air flowrate is incorrectly adjusted;
The generation and detection of dust depend on a
the air flow through the apparatus is not con-
-
great number of parameters. For this reason, the de-
stant, or the vacuum is incorrectly applied;
termination of the amount of dust yields results which
- the timing control is imprecise.
are valid only for the specified test conditions. This
means that a direct comparison of either the visual or
These errors can be minimized by making appropriate
the quantitative results of dust behaviour with results
adjustments to the apparatus.
from other test methods is not possible. However, the
relative order of the results of a set of test specimens
b) external factors:
from one test method is likely to be comparable with
humidity;
that from other test methods.
- electrostatic charges inside the vertical tube
and the dust chamber;
8.1 Visual method
distribution of the dust
- inhom ogeneous
within the samp le .
Express the result of the visual method as the grey
scale rating obtained in 7.1.
Q J Test report
A quantitative determination of the amount of dust
produced by a dye is not possible by the visual
The test report shall include the following information:
method. The main reasons for this are different par-
ticle size distributions, particle sizes and shades of the
the number and year of publication of this part of
a)
dust in each case.
ISO. 05, i.e. IS0 105-ZO5:1996;
Visual assessment is subjective, and depends on fac-
a full description of the sample tested;
b)
tors such as the experience of the examiner, the hue
the exact mass of the test portion taken;
d
of the layer of dust and the nature of the filter surface
(smooth or rough). Variations of up to half a rating unit
the air flowrate;
d)
are inherent in this system. Empirically, the total error
the extraction time;
d
u
...
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