E DIN 53160‐2:2010‐01 ‐‐‐ DRAFT ‐‐ Content
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Preface ................................................. .................................................. ......... 3 1 Scope ................................................ .................................................. .......... 4 2 Normative References ............................................... ..................................... 4 3 Terminology ................................................ .................................................. 4 4 devices and test equipment .............................................. .............................. 5 5 reagents ................................................ .................................................. ....... 5 6 Implementation ................................................ .............................................. 6 7 Evaluation ................................................ .................................................. .... 6 8 Test report ................................................ .................................................. ... 6 9 Precision ................................................ .................................................. .... 6 References ................................................. .................................................. . 7
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E DIN 53160‐2:2010‐01 ‐‐‐ DRAFT ‐‐ Preface
This draft standard was in the NPF / NAB‐Community Working Group NA 078‐00‐14‐01 GAK 'saliva and perspiration, \"the NPF / NAB community working committee NA 078‐00‐14 GA developed\" analytical methods for colorants.
To avoid misunderstandings, it is noted that the test is not according to this draft standard is the same as in DIN EN ISO 105‐E04 \"Textiles ‐ Tests for color fastness ‐ Part E04: Colour fastness unit to
perspiration (ISO 105‐E04: 1994); German version EN ISO 105‐E04: 1996 \"drive specified test methods. Changes
Compared with DIN V 53160‐2:2002‐10 following changes: a) Scope modified; b) Subpart re‐recorded;
c) included in the section equipment and test equipment saran wrap; d) Content revised editorially and adapted to the current design rules.
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E DIN 53160‐2:2010‐01 ‐‐‐ DRAFT ‐‐ 1 Scope
This draft standard specifies a method to examine the colour fastness of commodities compared sweat simulant. The procedure is designed especially for those commodities, which are intended or which is predictable that they are in use with the skin. Through the examination will determine whether the utility can pass from coloring on the skin.
This standard does not apply to goods which are intended for contact with food, as well as parts of consumer goods, which make their function colorants, or commodities, for which this is the case in its entirety.
NOTE Examples are mines of crayons and colored pencils.
The test method is applicable to all commodities, regardless of the method used for coloring (such as dyeing, staining, coating). A possible mechanical wear, such as free‐framing of a colored layer after mechanical abrasion of a top coat will not be considered. 2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only taken with respect issue. For undated references, the latest edition of the reference publication (including amendments).
DIN 12 491, Laboratory glassware ‐ Vacuum Desiccators
DIN 12880, Electrical laboratory equipment ‐ ovens and incubators DIN 55943, colorants ‐ Definitions
DIN EN ISO 4618, Paints and varnishes ‐ Vocabulary
DIN EN 20105‐A03, Textiles ‐ Tests for color fastness ‐ Part A03: Grey scale for assessing staining DIN ISO 3696, Water for analytical purposes ‐ Requirements and tests 3 Terms
For the purposes of this document, the following terms. 3.1
Colourfastness
Transition of a colorant from being tested on the filter paper using a simulant 3.2
Colorants
Generic term for all coloring substances
NOTE classification of colorants see DIN 55944th [DIN 55943:2001‐10, 3.58] 3.3
Topcoat
last layer of a coating system [DIN EN ISO 4618:2007‐03, 2108]
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E DIN 53160‐2:2010‐01 ‐‐‐ DRAFT ‐‐ 4 Equipment and test equipment
4.1 filter paper for qualitative analysis of variable‐.
4.2 Tape, Clear, self adhesive plastic tape, approximately 12 mm wide. 4.3 foil, household foil. 4.4 Desiccator, 12491st DIN
4.5 oven, according to DIN 12880, suitable for an operating temperature of (37 ± 2) ° C. 5 Reagents 5.1 General
Unless otherwise specified, use only reagents for the sweat simulate with the quality of analytical and only water, the quality of purity of at least 3 to DIN ISO 3696 equivalent. 5.2 Composition of the sweat simulate with pH value of 6.5 ± 0.1
Table 1 ‐ sweat simulate
Reagents
Sodium chloride, urea,
lactic acid (> 88%, by weight)
Ammonium hydroxide solution (1%, by weight)
NOTE The composition of the sweat simulate is the same as in DIN EN 1811 reference test method for determination of nickel from products intended to come into direct and prolonged contact with skin Schweißsimulanz set.
5.3 Preparation of Manufacture of sweat simulate
(1.00 ± 0.01) g of urea (5.00 ± 0.01) grams of sodium chloride and (1.00 ± 0.01) g of lactic acid in a 1000 ml beaker transfer. 900 ml of water and stir until all the added reagents are completely dissolved. The pH meter calibrated according to the manufacturer's instructions with buffer solution. Then the pH electrode in the solution, stir lightly and add ammonium hydroxide solution until a stable pH value is achieved from 6.5 ± 0.1. The solution to a 1000 ml volumetric flask transfer and fill with water up to the mark. Before use, the pH of the sweat simulate in the range of 6.5 ± 0.1. The sweat simulate only on the day of production use.
Mass fraction g / l
5.0 1.0 1.0
Adding up to a pH value of 6.5 ± 0.1
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E DIN 53160‐2:2010‐01 ‐‐‐ DRAFT ‐‐
6 Procedure
6.1 Depending on the size of the test object (hereinafter referred to as sample) cut a strip of about 15 mm in width and up to 80 mm length from the filter paper (4.1). 6.2 The filter paper strips soaked with sweat simulate (5.3).
6.3 Place the soaked filter paper strips (see 6.2) lay on the sample and in an appropriate manner, for example, with the tape (4.2) or wrap in foil (4.3) on the sample fixed so that a possible close contact between the sample and is the soaked filter paper (note especially curved objects). To this end, the tape the filter paper strip in its full length cover, and it must extend beyond both ends of the strip at least 10 mm so that it can be stuck in dry places of the sample.
If the object is too large to be tested, perform the test on a section or Part of the object. If the sample is too small for the given test set, such as wooden beads, it is in a piece of filter paper impregnated with sweat simulate wrapped tightly.
6.4 The sample prepared under 6.3 in the desiccators (3.4) for 2 h at (37 ± 2) ° C above water. The desiccators before in the oven (4.5) put to the test and during the test period left in the oven.
7 Evaluation
The filter paper removed from the sample, place with adhesive tape side down in the oven and at (37 ± 2) ° C to dry for 1 hour. The color of the filter‐paper by comparing the gray scale according to DIN EN 20105‐A03 evaluate. As a result, specify the level of gray scale.
For smooth staining of filter‐paper to evaluate the worst‐colored body and mention this fact in the report.
NOTE can to facilitate the assessment using a commercially available scanner / copier, the gray scale are recorded together with the angebluteten filter paper. In the color intensity is expressed in gray scale and compared with the same gray scale covered.
8 Test Report
The test report must contain at least the following information:
a) all information necessary for marking the audited object required; b) a reference to this pre‐standard (DIN V 53160‐2); c) The test result: the gray scale level (see Section 7); d) any deviation from the specified test methods; e) Test date.
9 Precision
Information on the precision does not currently exist.
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E DIN 53160‐2:2010‐01 ‐‐‐ DRAFT ‐‐ References
DIN 55943:2001‐10, colorants ‐ Definitions
DIN 55944, colorants for coloristic and chemical aspects
DIN EN ISO 4618:2007‐03, coating substances ‐ Vocabulary (ISO 4618:2006); Trilingua
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