1、DEUTSCHE NORM October 1996 I DIN Feather and down Method of test for determining water-soluble chlorides - English version of DIN EN 1165 I I tN 1169 ICs 67.120.20; 97.160 Descriptors: Feather, down, water-soluble chlorides, testing. Federn und Daunen - Prfverfahren - Bestimmung von wasserlslichen C
2、hloriden European Standard EN 1165: 1996 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by CEN/TC 222. The responsible German body involved in its preparation was the Normenausschu Textil und Textilmaschinen (Textiles and Te
3、xtile Machinery Standards Committee), Technical Committee Federn und Daunen. The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: IS0 Standard DIN Standard IS0 648 DIN 12690 IS0 3696 DIN IS0 3696 IS0 3819 DIN 12331 IS0 385-3 DIN 12700-2 Sta
4、ndards referred to (and not included in Normative references) DIN 12331 DIN 12690 Beakers for laboratory use Classes A and B one-mark bulb pipettes for laboratory use Burettes with straight bore stopcock, for laboratory use DIN 12700-2 EN comprises 6 pages. O No part of this standard may be reproduc
5、ed without the prior permission of DIN Deutsches Institut fr Normung e.!/., Berlin. Beuth Verlag GmbH, Berlin, has the exclusive right of sale for German Standards (DIN-Nomen) Ref. No. DIN EN 1165: 1996-10 Price group 05 Sales No. 11 05 05.97 EUROPEAN STAN DAR D NORME EUROPENNE EUROPISCHE NORM EN 11
6、65 August 1996 ICs 67.120.20; 97.160 Descriptors: Feather, down, water-soluble chlorides, testing. English version Feather and down Test methods Determination of water-soluble chlorides Plumes et duvets - Mthodes dessai - Dtermination des chlorures solubles dans leau Chloriden Federn und Daunen - Pr
7、fverfahren - Bestimmung von wasserlslichen This European Standard was approved by CEN on 1996-05-09. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-
8、to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat 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 unde
9、r the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherla
10、nds, Norway, Por- tugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-IO50 Brussels O 1996. GEN - All rights of exploitation in any form and by a
11、ny means reserved worldwide for CEN national members. Ref. No. EN 1165:1996 E Page 2 EN 1165:1996 Foreword This European Standard has been prepared by the Technical Committee CENTTC 222 “Feather and down as filling material for any article, as well as finished articles filled with feather and down“,
12、 the secretariat of which is held by UNI. 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 February 1997, and conflicting national standards shall be withdrawn at the latest by February 1997. Accor
13、ding to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,
14、Switzerland and the United Kingdom. Page 3 EN 1165:1996 1 Scope This European Standard specifies a method for determining the water-soluble chloride content of feathers and down. The techniques involved are not adequate for determining significant differences where the water-soluble chlorides found
15、by this method are below 50 mg/kg. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references,
16、 subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 20139 EN 20187 IS0 385-3 IS0 648 IS0 3696 IS0 3819 IS0 4793
17、Textiles - Standard atmospheres for conditioning and testing (IS0 139: 1 973) Paper, board and pulps - Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples (IS0 187:1990) Laboratory glassware - Burettes - Part 3: Burettes for which
18、a waiting time of 30 s is specified Laboratory glassware - One-mark pipettes Water for analytical laboratory use - Specification and test methods Laboratory glassware - Beakers Laboratory sintered (fritted) filters - Porosity grading, classification and designation 3 Definitions For the purposes of
19、this standard, the following definition applies: water-soluble chlorides content: It is the amount of chloride ions extracted and determined by means of a titration technique under conditions specified in this standard. 4 Principle The test specimen is extracted with ambient temperature water for 1
20、h. The extract is filtered and its chloride ion concentration is determined by a titration technique with standard silver nitrate. To the aqueous extract at ambient temperature is added a small quantity of potassium chromate as an indicator. Page 4 EN 1165:1996 5 Reagents 5.1 Water grade 2, conformi
21、ng with IS0 3696 5.2 0,l mol/l nitric acid 5.3 0.01 mol/l silver nitrate: to be stored in a brown bottle 5.4 phenolphthalein indicator, solution 1 ,O% of mass 5.5 potassium chromate, solution 3,9 g/l 5.6 sodium carbonate solution, 10,6 g/l 6 Apparatus Glassware and other apparatus shall be clean. Bo
22、il flasks, beakers and funnels shall be cleaned in distilled water. Forceps and scissors for individual sample preparation shall be kept clean in the same way. 6.1 Analytical balance (with sensitivity of 0,l mg) 6.2 Tumbler jar, capacity 2000 ml 6.3 Beaker, capacity 2000 ml (in accordance with IS0 3
23、819) 6.4 Shaking machine with 150 shakes per minute and with shaking swing of 40 mm or tumbling machine with 150 min- 6.5 One-mark pipette, capacity 25 ml (in accordance with IS0 648) 6.6 Microburette, capacity 1 O ml, graduated in 0,Ol ml (in accordance with IS0 385-3) 6.7 Sintered (fritted) filter
24、, pore size index P 100 (in accordance with IS0 4793) or chloride free medium paper filter 6.8 Glass funnel 6.9 Conical flasks, capacity 250 ml or 300 ml 6.10 Latex gloves or equivalent 6.1 1 Light source with wave length of 400-600 mm or yellow glasses 7. Preparation of the test specimen 7.1 Condit
25、ion the laboratory bulk sample in accordance with EN 20139 and measure the temperature and relative humidity in accordance with EN 20187. 7.2 Clean protective gloves should be worn at all times when handling the individual sample and the test specimens prepared from it. Page 5 EN 1165:1996 7.3 Cut t
26、he individual sample into pieces approximately 5 mm to 10 mm in size, and mix them thoroughly. Prepare two test specimens at least. 8. Procedure 8.1 For filling containing less than 150 mg/kg of chlorides, use a test specimen of 10 g or more. For filling containing more than 150 mg/kg use a test spe
27、cimen of such mass that the chloride content concerned is not greater than 1,50 mg . The conditioned test specimens shall be weighed to an accuracy of 10 mg. 8.2 Place the individual sample in a tumbler jar, add 1 I of water (5.1) and tumble the jar at room temperature for at least 60 min. 8.3 The r
28、esulting suspension shall be filtered into the beaker; do not squeeze excess water from down and feather. 8.4 To 200 ml of the filtrate shall be added one drop of phenolphthalein indicator solution (5.4) and then add 0, mol/l nitric acid (5.2) from a measuring pipette until acid, then add sodium car
29、bonate solution (5.6) until alkaline, plus three drops in excess. 8.5 Dropwise add nitric acid (5.2) to just discharge the pink colour. 8.6 Add 0,5 ml potassium chromate solution (5.5) and titrate with 0,Ol mol/l silver nitrate (5.31 using a microburette. Add silver nitrate solution (5.3) until a re
30、ddish-brown tint is observed under a light source (6.1 1) or through yellow glasses. 8.7 Determine the amount of silver nitrate solution (5.3) necessary to titrate a blank to the same end point. 8.8 Repeat the procedure on a second test specimen. 9 Expression of results The chloride content expresse
31、d as mass content in mg/kg is calculated as follows: C=(A XBM x 1000 where: C is the chloride content, in mg/kg; A is the volume, in milliliters, of silver nitrate solution (5.3) consumed in the titration of the test solution, corrected for the blank; B is the chloride equivalent of the silver nitra
32、te solution (5.3); W is the mass in grams of the conditioned test specimen. NOTE: 1 ml 0,Of mol/l ASNO, is equivalent to 0,355 mg of chloride Calculate the mean of the two determinations with the approximation to the nearest integer. Page 6 EN 1165:1996 10 Test report The test report shall include a
33、t least the following informations: - the reference to this standard; - date and place of testing; - identification mark of the individual sample tested; - the arithmetic mean result of the content of water-soluble chlorides in milligrams per kilogram, and round off the result to the nearest integer; - any deviations from the procedure and any other circumstances that can have affected the result.
