DIN EN 1164-1998 Feather and down - Test methods - Determination of the turbidity of an aqueous extract German version EN 1164 1998《羽毛和绒毛 试验方法 含水萃取物混浊性的测定》.pdf

1、DEUTSCHE NORM October 1998 Feather and down - Test methods Determination of the turbidity of an aqueous extract English version of DIN EN 11 64 I DIN - I EN1164 ICs 59.040 Descriptors: Feather, down, turbidity, testing. Federn und Daunen - Prfverfahren - Bestimmung der Trbung eines wrigen Extraktes

2、European Standard EN 11 64 : 1998 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 Textilma- schinen (Textiles and Textile

3、 Machinery Standards Committee), Technical Committee Federn und Daunen. EN comprises 7 pages. No pari of this standard may be reproduced without the prior permission of Ref. No. DIN EN 1164: 1998-1 V Deutsches Institut fur Normung e VI Berlin Luth Verlag GmbH, D-10772 Berlin, has the exclusive right

4、 of sale for German Standards (DIN-Normen) English price group 06 . Sales No. 1106 03.99 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1164 September 1998 ICs 59.040; 67.120.20; 97.160 Descriptors: Feather, down, turbidity, testing. English version Feather and down - Test methods Determinatio

5、n of the turbidity of an aqueous extract Plumes et duvets - Mthodes des- sais - Dtermination de la turbidit dun extrait aqueux wrigen Extraktes Federn und Daunen - Prfverfahren - Bestimmung der Trbung eines This European Standard was approved by CEN on 1998-08-1 3. CEN members are bound to comply wi

6、th the CENKENELEC 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 stand- ards may be obtained on application to the Central Secreta

7、riat or to any CEN member. The European Standards exist 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 Central Secretariat has the same status as the official

8、 versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standard

9、ization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1998. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 1164 : 1998 E Page 2 EN1164:1998 Foreword This

10、 European Standard has been prepared by Technical Committee CENKC 222 “Feather and down as filling material for any article, as well as finished articles filled with feather and down“, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, e

11、ither by publication of an identical text or by endorsement, at the latest by March 1999, and conflicting national standards shall be withdrawn at the latest by March 1999. Annex A is informative. According to the CENICENELEC internal Regulations, the national standards organizations of the followin

12、g countries are bound to implement this European Standard: Austria, Belgium, Czech-Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netheriands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Page 3 EN 1164: 1998 1 Scope This European St

13、andard specifies a method to check one of the cleanliness aspects of feather and down ready to be used through the determination of the amount of undissolved and solved matter present in the aqueous extract. 2 Normative references This European Standard incorporates by dated or undated reference, pr

14、ovisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European standard only when incorporated in i

15、t by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 201 39 Textiles - Standard atmospheres for conditioning and testing (IS0 1 39:1973) EN 201 87 Paper, board and pulps - Standard atmosphere for conditioning and testing and procedure for m

16、onitoring the atmosphere and conditioning of samples (IS0 187:1990) EN IS0 3696 Water for analytical laboratory use - Specification and test methods (IS0 3696:1987) 3 Definitions For the purposes of this standard the following definition applies: turbidity reduction of transparency of the filtrate s

17、uspension caused by the presence of undissolved and solved matter 4 Principle A test specimen having a specified mass is mixed in the water in the ratio 1:lOO and correctly shaked. After filtration, the aqueous extract is gradually transferred in a graduated cylinder, on which bottom there is a cros

18、s of specified dimensions and the height of the suspension shall be determined when the cross is no more visible. Go on filling the graduated cylinder for 20 mm at least and then let the aqueous extract gradually flow down recording the height when the cross is visible again. The turbidity is given

19、by the mean height of the determination during upward and downward phases. 5 Reagents Water grade 3 in accordance with EN IS0 3696 6 Conditioning and testing Conditioning and testing shall be carried out in accordance with EN 20139 and the temperature and relative humidity shall be measured in accor

20、dance with EN 201 87. 7 Apparatus 7.1 The turbidity meter (see Figure 1) consists of two parts: Page 4 EN1164:1998 7.1.1 A graduated transparent cylinder, higher than 300 mm and from 30 to 35 mm in diameter, graduated in 1 mm divisions. The cylinder is equipped with a pipe allowing the liquid to go

21、in and out the measuring device. On the flat bottom of the cylinder is fixed a disc of plastic material on which two double black lines one (11 0,02) mm apart, long as the cylinder diameter, fast to light and resistent to water, and large (0,510,02) mm and other two double black lines, with the same

22、 dimensions, perpendicular to the first ones. The cylinder is placed on a top with a white surface. 7.1.2 A container; capacity 1000 ml, mounted on a lifter acting in a communicative vessel system, connected to the turbidity meter by a flexible tube connected to the pipe (see 7.1.1). NOTE: The contr

23、ast of the two double black lines and the white material should be assessed for clarity. 7.2 Analytical balance accurate to at least 1 O mg 7.3 Tumbler jar, capacity 2000 ml 7.4 Beaker, capacity 2000 ml 7.5 Shaking machine with 150 shakes per minute and with shaking swing of 40 mm or tumbling machin

24、e with 150 min” 7.6 Sintered (fritted) filter, pore size index P 160 10 cm diameter (see IS0 4793) 7.7 Light source: north sky light or an equivalent source of illumination of about at least 600 Ix 7.8 Lux meter giving an indication of the room light 8 Procedure 8.1 Place conditioned test specimen o

25、f representative pari of the laboratory bulk sample (see prEN 1883) with a mass of (1010,l) g in the tumbler jar, containing 1000 ml of water (see clause 5), the jar is tumbled at room temperature for (6015) min. 8.2 Without wringing the water in excess from the test specimen, filter the suspension

26、through the sintered filter (7.6) and put the filtrate into the beaker (7.4). 8.3 Before starting the test check that the vase is in the low position. 8.4 Pour the liquid into the container. 8.5 Gradually lift up the container so that the liquid flows into the graduated cylinder. 8.6 Observe from th

27、e top through the liquid, by normal vision or vision corrected to normal, the height of the filtrate as soon as the cross is no longer visible by the operator and record the height on the graduated cylinder in millimeter as Hi. 8.7 Raise the container for at least 20 rnrn more. 8.8 Gradually lower t

28、he container in such a way the liquid flows out of the graduated cylinder. 8.9 Observe the height of the filtrate as soon as the cross is visible again by the operator and record the height on the graduated cylinder in millimeter as H2. Page 5 EN 1164: 1998 8.10 Compare Hi and H2. If Hl and H;! diff

29、er more than 10 mm repeat the procedure from 8.4. If the difference persists, change the operator. If it cannot be cured, note the individual values in the test report. 8.11 Register the mean value of Hl and H2, 8.12 Repeat the test on at least another test specimen. The procedure described from 8.2

30、 to 8.12 shall be repeated by another operator. 9 Expression of results Calculate: - the mean values of Hi in millimetres, with the approximation to the millimeter; - the mean values of H2 in millimetres, with the approximation to the millimeter; - the general mean of Hl and H2 in millimeters,rounde

31、d to the nearest multiple of 5. 1 O Test report The test report shall include at least the following information: - the reference to this standard; - date and place of testing; - identification mark of the sample tested: -the general mean of Hi and H2 in millimeters,rounded to the nearest multiple o

32、f 5. When the difference between the mean of Hi and the mean of 3- rod equipped with a device to rise and low the container; 4- disc with the cross on the bottom of the graduated cylinder 5- double black line , 2- container Figure 1: Turbidity meter Page 7 EN 1164: 1998 Annex A (informative) Bibliography EN 1883 IS0 4793 Feather and down - Sampling in view of tests Laboratory sintered (fritted) filters - Porosity grading, classification and designation