EN ISO 19712-3:2013

SLOVENSKI STANDARD
01-februar-2014
Polimerni materiali - Dekorativni trdni površinski materiali - 3. del: Ugotavljanje
lastnosti - Oblika (ISO 19712-3:2007)
Plastics - Decorative solid surfacing materials - Part 3: Determination of properties - Solid
surface shapes (ISO 19712-3:2007)
Kunststoffe - Dekorative Mineralwerkstoffe - Teil 3: Prüfverfahren - Formteile (ISO 19712
-3:2007)
Plastiques - Matériaux décoratifs massifs de revêtement de surface - Partie 3:
Détermination des propriétés - Produits mis en forme (ISO 19712-3:2007)
Ta slovenski standard je istoveten z: EN ISO 19712-3:2013
ICS:
83.140.20 /DPLQDWQHSORãþH Laminated sheets
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 19712-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2013
ICS 83.140.20
English Version
Plastics - Decorative solid surfacing materials - Part 3:
Determination of properties - Solid surface shapes (ISO 19712-
3:2007)
Plastiques - Matériaux décoratifs massifs de revêtement de Kunststoffe - Dekorative Mineralwerkstoffe - Teil 3:
surface - Partie 3: Détermination des propriétés - Produits Prüfverfahren - Formteile (ISO 19712-3:2007)
mis en forme (ISO 19712-3:2007)
This European Standard was approved by CEN on 22 December 2012.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19712-3:2013: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
The text of ISO 19712-3:2007 has been prepared by Technical Committee ISO/TC 61 “Plastics” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 19712-3:2013 by
Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by July 2013, and conflicting national standards shall be withdrawn at the
latest by July 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 19712-3:2007 has been approved by CEN as a EN ISO 19712-3:2013 without any
modification.
INTERNATIONAL ISO
STANDARD 19712-3
First edition
2007-12-15
Plastics — Decorative solid surfacing
materials —
Part 3:
Determination of properties — Solid
surface shapes
Plastiques — Matériaux décoratifs massifs de revêtement de surface —
Partie 3: Détermination des propriétés — Produits mis en forme

Reference number
ISO 19712-3:2007(E)
©
ISO 2007
ISO 19712-3:2007(E)
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ii © ISO 2007 – All rights reserved

ISO 19712-3:2007(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Cleaning the test specimen surface . 2
5 Surface defects . 2
6 Resistance to impact by large-diameter ball .3
7 Lightfastness. 5
8 Stain/chemical-resistance test . 10
9 Resistance to cigarette burns . 17
10 Resistance to dry heat. 25
11 Resistance to wet heat . 31
12 Hot/cold-cycle water-resistance test . 34
13 Hardness. 38
14 Ability to be renewed. 38
Bibliography . 39

ISO 19712-3:2007(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 19712-3 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products.
ISO 19712 consists of the following parts, under the general title Plastics — Decorative solid surfacing
materials:
⎯ Part 1: Classification and specifications
⎯ Part 2: Determination of properties — Sheet goods
⎯ Part 3: Determination of properties — Solid surface shapes
iv © ISO 2007 – All rights reserved

ISO 19712-3:2007(E)
Introduction
This part of ISO 19712 is intended for use by manufacturers, installers and specifiers of solid surfacing
materials.
The test methods and minimum performance values presented have been related as closely as possible to
end-use applications. The fabrication techniques employed may, however, have a bearing on product
performance and service.
The performance requirements include impact resistance, structure, renewability, colourfastness, cleanability,
stain resistance, water resistance, chemical resistance, bacterial and fungal resistance, and other significant
properties.
INTERNATIONAL STANDARD ISO 19712-3:2007(E)

Plastics — Decorative solid surfacing materials —
Part 3:
Determination of properties — Solid surface shapes
SAFETY STATEMENT — Persons using this document should be familiar with normal laboratory
practice, if applicable. This document does not purport to address all of the safety problems, if any,
associated with its use. It is the responsibility of the user to establish appropriate safety and health
practices and to ensure compliance with any regulatory conditions.
1 Scope
This part of ISO 19712 specifies the methods of test for determination of the properties of solid surfacing
materials, as defined in Clause 3, in the form of shaped products. These methods are primarily intended for
testing the materials specified in ISO 19712-1.
The tests may be carried out on finished products, but are generally carried out on test panels of a size
sufficient to meet the requirements of the test, and of the same material and finish as the finished product.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 105-A02, Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour
ISO 105-B02, Textiles — Tests for colour fastness — Part B02: Colour fastness to artificial light: Xenon arc
fading lamp test
ISO 209:2007, Aluminium and aluminium alloys — Chemical composition
ISO 1770, Solid-stem general purpose thermometers
ISO 2039-1, Plastics — Determination of hardness — Part 1: Ball indentation method
ISO 2039-2, Plastics — Determination of hardness — Part 2: Rockwell hardness
ISO 3668, Paints and varnishes — Visual comparison of the colour of paints
ISO 4211:1979, Furniture — Assessment of surface resistance to cold liquids
1)
ISO 4892:1981, Plastics — Methods of exposure to laboratory light sources
ISO 4892-1, Plastics — Methods of exposure to laboratory light sources — Part 1: General guidance
ISO 4892-2:2006, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc sources

1) Withdrawn, but still used in certain Asian countries.
ISO 19712-3:2007(E)
ISO 9370, Plastics — Instrumental determination of radiant exposure in weathering tests — General guidance
and basic test method
CIE Publication No. 85:1989, Solar spectral irradiance
ASTM D 2244, Standard Practice for Calculation of Color Tolerances and Color Differences from
Instrumentally Measured Color Coordinates
ASTM D 2583, Standard Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol
Impressor
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
solid surfacing material
SSM
material, composed of polymeric materials together with pigments and fillers, intended to be cast into sheets
or shaped products
NOTE 1 The material is of the same composition throughout the whole thickness of the sheet or product.
NOTE 2 Sheets and products made from SSMs are repairable and renewable to the original finish.
NOTE 3 SSMs can also be fabricated into continuous sheets with inconspicuous seams.
4 Cleaning the test specimen surface
4.1 General
The surface to be tested shall be prepared prior to testing using the procedure specified in 4.3.
4.2 Materials
4.2.1 Cellulose sponge.
4.2.2 Non-abrasive cleanser, containing a bleaching agent.
4.2.3 Water.
4.2.4 Clean, absorbent, lint-free material.
4.3 Procedure
Clean the surface using a damp sponge and non-abrasive cleanser containing a bleaching agent, scrubbing
the surface with light hand pressure for up to 1,0 min/m . Rinse the prepared surface with water and dry with
clean, absorbent, lint-free material.
5 Surface defects
5.1 Procedure
The entire finished surface of the shaped product under test shall be rubbed with a sponge and a 50 %
solution of tap water and water-soluble black or blue-black ink after the surface has been washed and dried as
described in 4.3. When inspecting coloured sheets, contrasting-coloured ink shall be used. The ink shall be
wiped from the surface with a damp cloth and the surface dried before inspection.
2 © ISO 2007 – All rights reserved

ISO 19712-3:2007(E)
5.2 Method of inspection of surface
After being inked in accordance with 5.1, the surface of the shaped product shall be inspected with the
unaided eye for defects and blemishes from a distance of between 305 mm and 610 mm, using a light source
giving an illumination intensity of (1 615 ± 540) lx near the surface to be inspected.
5.3 Performance requirements
The finished surfaces of shaped products shall be free from cracks, chipped areas, pinholes and blisters.
Spots, dirt and similar surface blemishes are admissible provided the total area covered by such blemishes is
2 2
not more than 1,0 mm /m of the surface of the shaped product. The blemishes may be concentrated in one
place or scattered over the product.
5.4 Test report
The test report shall include the following information:
a) a reference to this part of ISO 19712;
b) the name and type of product;
c) whether the surface was free from cracks, chipped areas, etc.;
2 2
d) whether the area covered by spots, dirt, etc., was more than 1,0 mm /m of sheet surface;
e) any deviation from the method specified;
f) the date of the test.
6 Resistance to impact by large-diameter ball
6.1 Principle
While this test method can be used for any shaped product of suitable size and shape, it is intended
principally for sinks and is therefore written for that particular product.
A sink made of solid surface material is covered with a sheet of carbon paper and subjected to the impact of a
steel ball which is allowed to fall from a known height. The impact resistance is expressed as the maximum
drop height which does not incur visible surface cracking or chipping.
6.2 Test specimen
Sinks to be tested shall be taken from the finished-goods inventory.
6.3 Procedure
A 38,1-mm-diameter, 0,225 kg steel ball shall be dropped from a height of 610 mm to impact once on each of
four different areas in each sink compartment.
Two of these areas shall be on the flat area of the sink bottom, and the other two points shall be on the
convex rim radius.
Service sinks without rolled rims, and other cast products, shall be impacted only on the compartment bottom.
Impact locations for typical sink configurations shall be as shown in Figure 1.
ISO 19712-3:2007(E)
Additionally, the 0,225 kg steel ball shall be dropped to impact once on each of three different points on flat
areas of sinks with tops or integral tops and drainboards.
The sink shall be mounted in accordance with the manufacturer's instructions for normal use.
6.4 Performance requirement
The sink shall not show any cracks or chips after inking and inspection as described in 5.1 and 5.2.
6.5 Test report
The test report shall include the following information:
a) a reference to this part of ISO 19712;
b) the name and type of sink;
c) whether the sink showed any cracks or chips;
d) any deviation from the method specified;
e) the date of the test.
• impact points
Figure 1 — Point-of-impact locations
4 © ISO 2007 – All rights reserved

ISO 19712-3:2007(E)
7 Lightfastness
7.1 Method A
7.1.1 Principle
A specimen taken from the product under test is exposed to daylight simulated by the filtered light of one or
more xenon-arc lamps. The effect on the colour of the specimen, at a specified radiant exposure, is assessed
by the contrast between the exposed and unexposed portions of the test specimen. The radiant exposure is
determined both instrumentally and by assessing the effect on blue wool references which are exposed
simultaneously.
Daylight spectral distribution is specified since SSM products may, in certain applications, be exposed to
direct daylight through open windows.
7.1.2 Apparatus
7.1.2.1 Test device, as specified in ISO 4892-1 and ISO 4892-2, equipped with:
a) one or more xenon-arc lamps, filtered to provide a spectral energy distribution which closely
approximates to that of solar irradiance as described in CIE Publication No. 85:1989, Table 4, and
ISO 4892-2:2006, Table 1 (method A);
b) stainless-steel specimen holders, in the form of an open frame, which provide the test specimens with a
solid backing;
c) a black-standard thermometer as specified in ISO 4892-1;
d) a photoelectronic sensor (radiometer) of one of the types specified in ISO 9370 to measure the irradiance
and the radiant exposure at the specimen surface in the wavelength range 300 nm to 400 nm, or at
340 nm.
7.1.2.2 Viewing enclosure, having a matt interior colour corresponding approximately to Munsell N5. It
shall be equipped with an artificial light source, located at the top, simulating average north sky daylight (e.g.
tungsten-halogen incandescent lamps) and generating a colour temperature of (6 500 ± 200) K and at least
800 lx at the surface of the specimen. The viewing enclosure shall be placed in a position where the
surrounding lighting conditions will not affect the visual assessment of the specimen.
7.1.3 Test specimen
One test specimen shall be prepared, of a size suitable for the specimen holder used and appropriate for the
method of assessment after exposure.
7.1.4 Procedure
The test specimen and a set of blue wool references 5, 6 and 7 (as specified in ISO 105-B02) shall be
exposed simultaneously. Blue wool references 5 and 7 are included to provide confirmation that wool
reference 6 has degraded to the specified degree of contrast.
Using opaque stainless-steel covers, shield approximately one-half of both the test specimen and the set of
blue wool references.
Carry out the test in accordance with ISO 4892-2 under the following operating conditions:
a) irradiance at the test specimen surface in the wavelength range 300 nm to 400 nm: (60 ± 3) W/m ; or at
wavelength 340 nm: (0,5 ± 0,03) W/m ;
ISO 19712-3:2007(E)
b) black-standard temperature: (65 ± 3) °C;
c) relative humidity: (50 ± 5) %.
Discontinue the exposure when the contrast between the exposed and unexposed portions of blue wool
reference 6 is equal to grade 4 on the grey scale, as defined in ISO 105-A02 (see Note 1).
Measure and record the radiant exposure (over 300 nm to 400 nm, or at 340 nm).
Remove the test specimen from the apparatus, take off the cover, and leave the specimen for (24 ± 2) h in
dark conditions to prevent extraneous darkening and/or photochromism (see Note 2).
NOTE 1 Although the use of blue wool references is no longer the preferred method of measuring radiant exposure,
the method is still in common use and is therefore permitted. Once sufficient data have been collected, the end-point of
the test will be defined by the level of radiant exposure.
NOTE 2 Extraneous darkening and/or photochromism are due to the shock effect of accelerated exposure, and are not
characteristics of natural exposure. Keeping the specimens in dark conditions for 24 h allows recovery from these effects.
7.1.5 Assessment of specimen and expression of results
Place the test specimen in the viewing enclosure (7.1.2.2).
Examine the surface of the test specimen with the naked eye, corrected if necessary, at a distance of
approximately 500 mm for any change in colour, assessing the contrast between the exposed and unexposed
portions of the test specimen in terms of a grade on the grey scale in accordance with ISO 105-A02.
The lightfastness of the test specimen is expressed in terms of the contrast being greater than, equal to or
less than grade 4 on the grey scale.
7.1.6 Test report
The test report shall include the following information:
a) a reference to this part of ISO 19712;
b) the name, type and nominal thickness of the product;
c) details of the apparatus used;
d) the irradiance at the test specimen surface;
e) the radiant exposure;
f) the exposure time;
g) the lightfastness of the specimen;
h) any deviation from the method specified;
i) the date of the test.
7.2 Method B
7.2.1 Principle
The test assesses the effect on the colour of a test specimen of exposure to a filtered xenon-arc light source
having a frequency range simulating sunlight through window glass.
It is not intended to show the resistance to continuous exposure to outdoor weathering conditions.
6 © ISO 2007 – All rights reserved

ISO 19712-3:2007(E)
7.2.2 Materials
7.2.2.1 White petroleum jelly.
7.2.3 Apparatus
7.2.3.1 Suitable xenon-arc test apparatus, as specified in ISO 4892-1 and ISO 4892-2, capable of
providing radiant energy closely simulating sunlight, with a spectral passband of 280 nm to 800 nm and with
appropriate filtering to simulate daylight through window glass. The apparatus shall incorporate a system for
mounting specimen holders at an equal radial distance from the centre of the light source and revolving them
around the light source so as to provide equal radiant exposure.
7.2.3.2 Specimen holders, suitable for the test apparatus, and incorporating a mask to cover half of the
exposed face of the test specimen.
7.2.3.3 Overhead white fluorescent lights, with bulb(s) positioned parallel to the line of sight and
providing an intensity of 800 lx to 1 100 lx at the specimen surface.
7.2.4 Standardization of apparatus
Calibration, maintenance and filter changes shall be strictly in accordance with the equipment manufacturer's
recommendations.
The calibration wavelength for the xenon unit shall be 420 nm.
7.2.5 Test specimens
The test specimens shall be of the size specified for the test apparatus being used. The longest dimension of
the specimens shall be in the machine direction of the product.
7.2.6 Procedure
Mount each test specimen in a specimen holder (7.2.3.2) so that approximately one-half of the specimen is
exposed to the light source, the other half being covered by the mask. Fill all the specimen holders, utilizing
blanks if necessary, and keep them filled during the whole of the test in order to maintain correct airflow
conditions through the test chamber.
Carry out the test under the operating conditions specified in Table 1.
NOTE The setting of the wet-bulb temperature in relation to the dry-bulb temperature is designed to maintain a
relative humidity of (50 ± 5) %.
All test parameters shall be maintained as close as possible to the required settings.
Table 1 — Operating conditions
Parameter Setting Tolerance
2 2
Total irradiance 279,0 kJ/m ± 2,0 kJ/m
2 2
Irradiance level 1,10 W/m ± 0,03 W/m
Black-panel temperature 70 °C ± 3 °C
Dry-bulb temperature 50 °C ± 3 °C
Wet-bulb temperature 39 °C ± 1 °C
Conditioning-water temperature 20 °C ± 3 °C
Duration of exposure 72 h ± 1 %
Power adjustment Automatic To maintain steady irradiance levels, allowing for
ageing of xenon burners and solarization of filters
ISO 19712-3:2007(E)
The black-panel thermometer shall be mounted at the same distance from the light source as the test
specimen. The black coating shall be maintained in good condition in order to achieve as accurately as
possible the black-body temperature of the panel.
At the conclusion of the specified exposure period, remove the test specimens from their holders and allow
them to condition at room temperature for a period of 24 h.
After this conditioning period, examine each specimen within 4 h by placing the specimen on a horizontal
surface under the inspection lights (7.2.3.3) and viewing it at an eye-to-specimen distance of 750 mm to
900 mm, and at an angle of 45° to 75° from the horizontal plane. Rotate the specimen on the horizontal
surface and view it from all directions. Direct sunlight or other light sources which might accentuate or
minimize the visual effect shall be avoided.
If a difference in appearance is evident between the exposed and unexposed areas of the test specimen, coat
the surface of the specimen with a thin film of white petroleum jelly (7.2.2.1) and re-examine it. If the
difference persists, report the difference as a colour change; if it disappears, report it as a change in surface
finish.
7.2.7 Expression of results
Express the result of the examination in accordance with the following rating scale:
Rating 5: No change in colour or surface finish
Rating 4: A slight change in colour or surface finish visible only at certain viewing angles and
directions
Rating 3: A moderate change in colour or surface finish that is just visible at all viewing angles and
directions
Rating 2: A marked change in colour or surface finish that is very evident at all viewing angles and
directions
Rating 1: Surface blistering and/or cracking
7.2.8 Test report
The test report shall include the following information:
a) a reference to this part of ISO 19712;
b) the name, type and nominal thickness of the product;
c) details of the apparatus used;
d) the lightfastness of the specimen, expressed in accordance with 7.2.7;
e) any deviation from the method specified;
f) the date of the test.
8 © ISO 2007 – All rights reserved

ISO 19712-3:2007(E)
7.3 Method C (resistance to colour change in light from an enclosed carbon-arc lamp)
7.3.1 Principle
Part of a test specimen taken from the sheet under test is exposed, together with standard blue wool
specimens, to the light of an enclosed carbon-arc lamp. The light dosage is determined by the effect on the
wool specimens, and the effect on the test specimen is assessed at a specified light dosage by the contrast
between the exposed and unexposed portions of the specimen.
The test is fully described in ISO 4892:1981.
7.3.2 Apparatus
As specified in ISO 4892:1981, without control of humidity.
7.3.3 Test specimen
As specified in ISO 4892:1981.
7.3.4 Procedure
Carry out the test using the single-exposure method described in ISO 4892:1981, and discontinue the
exposure when blue wool standard No. 5 shows a contrast between exposed and unexposed portions equal
to grade 4 on the grey scale.
7.3.5 Evaluation and expression of results
Examine the contrast between the exposed and unexposed portions of the test specimen and record it in
terms of grades on the grey scale.
Express the result in relation to the resistance to colour change of blue wool standard No. 5 as one of those
given in Table 2.
Table 2 — Colour change evaluation
Specimen contrast Resistance to colour change
(grey scale grade No.) (blue wool standard No.)
> 4 > 5
4 5
< 4 < 5
7.3.6 Test report
The test report shall include the following information:
a) a reference to this part of ISO 19712;
b) the name and type of product;
c) the resistance of the specimen to colour change, expressed as greater than, equal to or less than that of
blue wool standard No. 5;
d) any deviation from the specified procedure;
e) the date of the test.
ISO 19712-3:2007(E)
8 Stain/chemical-resistance test
8.1 Method A
8.1.1 Principle
Test specimens are left in contact with a series of staining agents which are likely to be encountered in
everyday use. The time and conditions of contact are specified for each staining agent. At the end of the
specified contact period, the specimens are washed and examined for residual surface marks.
If the product under test meets specification requirements when tested with each of the six staining agents
marked with an asterisk, then it is deemed to comply with the specification for stain resistance. The other
staining agents are included for information only. In the case of a specific complaint, the staining agent in
question (selected from group 1, 2 or 3) shall be used to verify the quality of the sheet.
8.1.2 Staining agents
Staining agents and test conditions are listed in Table 3.
8.1.3 Apparatus and materials
8.1.3.1 Glass covers (for example watch-glasses), to restrict evaporation.
8.1.3.2 Thermometer, range 0 °C to 100 °C.
8.1.3.3 Cylindrical aluminium-alloy heating vessel, without a lid, the bottom of which has been
machined flat. The vessel shall have an external diameter of (100 ± 1,5) mm and an overall height of
(70 ± 1,5) mm, and have a safety rim round the top. The thickness of the wall and bottom shall be
(2,5 ± 0,5) mm. An example of a suitable vessel is shown in Figure 2.
8.1.3.4 Hotplate, or other suitable heat source.
8.1.3.5 Horizontal inspection surface, illuminated by overhead and low-angle daylight or white
fluorescent light of intensity 800 lx to 1 000 lx.
8.1.3.6 Wetting agent, for example domestic detergent.
8.1.3.7 Cleaning solvents, such as ethanol, acetone, methyl ethyl ketone.
8.1.3.8 Soft clean cloth.
8.1.3.9 Hard polyamide bristle brush (for example a nail brush).
8.1.4 Test specimens
Individual specimens of any suitable size may be used, cut from the product under test. Alternatively, a single
piece, large enough to allow the staining agents to be applied side by side, can be used.

10 © ISO 2007 – All rights reserved

ISO 19712-3:2007(E)
Table 3 — Staining agents
Staining agent Test conditions Contact time
Group 1
Toothpaste
Hand cream
Urine
Alcoholic beverages
Natural fruit and vegetable juices
Lemonade and fruit drinks
Meats and sausages
Animal and vegetable fats and oils
8.1.5.1  Procedure A
Water
Apply staining agent at 16 h to 24 h
Yeast suspension in water
ambient temperature
Salt (NaCl) solutions
Mustard
Lyes, soap solutions
Cleaning solution
23 % dodecylbenzene sulfonate
10 % alkylaryl polyglycol ether
67 % water
Phenol and chloramine-T disinfectants
Citric acid (10 % solution)
Group 2
8.1.5.1  Procedure A
*Coffee (120 g of coffee per litre of water)
Apply staining agent at 16 h
Black tea (9 g of tea per litre of water)
approximately 80 °C
Milk (all types)
Cola beverages
Wine vinegar
Alkaline-based cleaning agents diluted to 10 % concentration with
water
8.1.5.1  Procedure A
Hydrogen peroxide (3 % solution)
Apply staining agent at 16 h
Ammonia (10 % solution of commercial concentrate)
ambient temperature
Lipstick
Water colours
Laundry marking inks
Ball point inks
a
Group 3
*Sodium hydroxide (25 % solution)
*Hydrogen peroxide (30 % solution)
*Acetone
Trichlorethane
Other organic solvents
Concentrated vinegar (30 % acetic acid)
Bleaching agents and sanitary cleaners containing them
Hydrochloric acid based cleaning agents (u 3 % HCl)
8.1.5.1  Procedure A
Acid-based metal cleaners
Apply staining agent at 10 min
Mercurochrome (2,7-dibromo-4-hydroxymercurifluorescein,
ambient temperature
disodium salt)
*Shoe polish
Hair colouring and bleaching agents
Tincture of iodine
Boric acid
Lacquers and adhesives (except fast-curing materials)
Amidosulfonic acid descaling agents (< 10 % solution)
Nail varnish
Nail varnish remover
Stain or paint remover based on organic solvents
Group 4
*Citric acid (10 % solution) 8.1.5.2  Procedure B 20 min
Acetic acid (5 % solution)
a
Acids and alkalis, in concentrations stronger than those shown in group 3, which can be contained in commercial cleaning agents,
can cause surface damage or marking, even with very short contact times. Any spillage of such materials shall be washed off
immediately.
ISO 19712-3:2007(E)
Dimensions in millimetres
Key
1 aluminium-alloy safety rim
a
Bottom welded in place and machined flat. Vessel shall be completely watertight.
b
Nominal value.
Figure 2 — Example of heating vessel
12 © ISO 2007 – All rights reserved

ISO 19712-3:2007(E)
8.1.5 Procedures
8.1.5.1 Procedure A
The specimens shall be initially at ambient temperature.
Apply a small quantity (for example 2 or 3 drops) of staining agent to two specimens. The staining agent shall
be at the temperature specified in Table 3. Cover the staining agent on one of the two specimens with a glass
cover (8.1.3.1). Keep the specimens flat during the test.
After the specified contact time has elapsed, if necessary remove the staining agent with a suitable solvent as
recommended by the manufacturer, then wash with water containing a suitable wetting agent (8.1.3.6), and
finally with ethanol or another solvent (see 8.1.3.7), as required, to clean the surface. A suitable brush
(8.1.3.9) may be used to remove staining agent from textured surfaces.
1 h after washing, place the specimens on the inspection surface (8.1.3.5) and view them from various angles
at a distance of 400 mm.
8.1.5.2 Procedure B
Apply a small quantity (for example 2 or 3 drops) of the staining agent to the specimen. The staining agent
shall be at ambient temperature.
Fill the heating vessel (8.1.3.3) with water (to within 15 mm of the top) and heat it until the water boils
vigorously. Discontinue heating and immediately place the vessel containing the boiling water on the surface
of the specimen directly over the pool of staining agent. Keep the specimen flat during the test.
After the specified contact time, remove the vessel and wash the specimen with water containing a suitable
wetting agent (8.1.3.6), and then with ethanol or another solvent (see 8.1.3.7), as required, to clean the
surface. A suitable brush (8.1.3.9) may be used to remove staining agent from textured surfaces.
1 h after washing, place the specimen on the inspection surface (8.1.3.5) and view it from various angles at a
distance of 400 mm.
8.1.6 Expression of results
The effect on the surface of the specimen shall be expressed in accordance with the following rating scale for
each of the six mandatory staining agents:
Rating 5: No visible change
Rating 4: Slight change in gloss and/or colour, only visible at certain viewing angles
Rating 3: Moderate change in gloss and/or colour
Rating 2: Marked change in gloss and/or colour
Rating 1: Surface distortion and/or blistering
8.1.7 Test report
The test report shall include the following information:
a) a reference to this part of ISO 19712;
b) the name and type of product;
c) an assessment of stain resistance for each staining agent applied, expressed in accordance with the
rating scale given in 8.1.6;
d) any deviation from the specified procedure;
e) the date of the test.
ISO 19712-3:2007(E)
8.2 Method B
8.2.1 Principle
Test specimens are left in contact with a series of staining agents that are likely to be encountered in everyday
household use. At the end of the prescribed contact period, the specimens are subjected to a specified
cleaning programme and examined for any residual surface marks.
This method may also be used with staining agents other than those specified, to cover specific requirements
agreed between supplier and purchaser.
8.2.2 Materials
8.2.2.1 Commercially available non-abrasive cleaner, containing approximately 4 % of butyl cellosolve.
8.2.2.2 Commercially available bleach, containing (5 ± 0,5) % of sodium hypochlorite.
8.2.2.3 Baking soda.
8.2.2.4 Supply of clean, soft, white cloth.
8.2.2.5 Supply of cotton balls.
8.2.2.6 Acetone, 100 % by volume, or ethanol, 95 % by volume.
8.2.2.7 Distilled water.
8.2.2.8 Staining agents, as listed in Table 4.
Table 4 — Staining agents and their method of application
Agent
Description Preparation notes Application
number
1 Distilled water —
A mixture of 50 % ethyl alcohol and
2 Ethyl alcohol
50 % distilled water
3 Household ammonia Non-sudsing type
A solution of 10 % citric acid in distilled
4 10 % citric acid
water
Apply 2 drops (an approximately
5 Vegetable oil —
6-mm-diameter spot) and cover
One teaspoon of instant coffee per
with a watch-glass.
6 Fresh coffee
180 ml of distilled water
Brew 1 tea bag per 120 ml of boiling
7 Fresh tea
distilled water for 2 min
8 Tomato ketchup —
9 Yellow mustard —
10 Tincture of iodine —
11 Acetone —
12 Black permanent marker —
Apply a spot approximately 6 mm
13 HB pencil —
in diameter; do not cover.
14 Wax crayon —
15 Black paste shoe polish —
NOTE Staining agents shall be kept in closed containers to avoid any change in concentration. Perishable food items shall be
kept refrigerated.
14 © ISO 2007 – All rights reserved

ISO 19712-3:2007(E)
8.2.3 Apparatus
8.2.3.1 Glass covers, approximately 25 mm in diameter (for example watch-glasses), one for each test
requiring a cover.
8.2.3.2 Overhead white fluorescent lights, with bulb(s) positioned parallel to the line of sight and
providing an intensity of 800 lx to 1 100 lx at the specimen surface.
8.2.3.3 Cellulose sponge, measuring approximately 75 mm × 100 mm × 50 mm.
8.2.3.4 Hard polyamide bristle brush, for example a nail brush.
8.2.3.5 Weight, of mass 1 kg.
8.2.4 Test specimen
The test specimen shall have a surface area sufficient to permit all 15 test reagents to be placed on the
surface in two lines with the individual stains about 50 mm apart. A 100 mm × 400 mm specimen is adequate.
8.2.5 Procedure
8.2.5.1 Staining procedure
Clean the surface of the test specimen using the cleaner (8.2.2.1) and water on a clean cloth (8.2.2.4). Rinse
the specimen thoroughly and dry using another clean, soft cloth. Allow to dry completely at room temperature.
Position the test specimen on a flat, level, horizontal surface and fix it down (e.g. with tape or weights) to keep
it in the horizontal plane.
Place a small quantity of each staining agent (to give a spot approximately 6 mm in diameter) on the surface
of the test specimen. The staining agents shall be at room temperature.
If indicated in Table 4, cover each staining agent with a glass cover (8.2.3.1), concave side down, and move
the glass cover gently while in contact with the surface of the test specimen until the entire circular rim of the
glass cover is wetted by the staining agent and the staining agent covers an area both under and outside the
glass cover.
Mark the test specimen suitably so that each staining agent is identified.
Leave the test specimen undisturbed for a period of 16 h to 24 h, then remove the glass covers and subject
the test specimen to the cleaning procedures prescribed in 8.2.5.2.
8.2.5.2 Cleaning procedures and ratings
Stage 1: Flush the surface of the specimen with water and wipe gently with the sponge (8.2.3.3) moistened
with water. Blot the specimen dry with a clean, soft cloth (8.2.2.4) and examine the surface in accordance with
the inspection procedure described in 8.2.5.3. If a staining agent is completely removed by stage 1 cleaning
(i.e. no visible marks remain), then give that agent a rating of 0. If any stains remain, proceed to stage 2.
Stage 2: Wet the surface of the specimen with the non-abrasive cleaner (8.2.2.1). Moisten the sponge
(8.2.3.3) with water and place it on the surface, then place the 1 kg weight (8.2.3.5) centrally on top of the
sponge. Push the weighted sponge back and forth (without any additional downward pressure) over the area
to be cleaned for 25 cycles (see the Note). Rinse the specimen with water and wipe dry using a clean, soft
cloth (8.2.2.4), then examine the sur
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