BS EN 1164-1999 Feather and down - Test methods - Determination of the turbidity of an aqueous extract《羽毛和绒毛 试验方法 水解萃取混浊度的测定》.pdf

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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1164:1999 The Europ

2、ean Standard EN 1164:1998 has the status of a British Standard ICS 59.040 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Feather and down Test methods Determination of the turbidity of an aqueous extractBS EN 1164:1999 This British Standard, having been prepared under the dir

3、ection of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 March 1999 BSI 03-1999 ISBN 0 580 32184 3 Amendments issued since publication Amd. No. Date Text affected National foreword This British Standard is th

4、e English language version of EN 1164:1998. The UK participation in its preparation was entrusted to Technical Committee TCI/73, Fillings and filled articles, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the int

5、erpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards w

6、hich implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does

7、 not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an insid

8、e front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any fo

9、rm and by any means reserved worldwide for CEN national Members. Ref. No. EN 1164:1998 E EUROPEAN STANDARD EN 1164 NORME EUROPE ENNE EUROPA ISCHE NORM September 1998 ICS 59.040; 67.120.20; 97.160 Descriptors: stuffings, feathers, tests, aqueous extract, transparency, measurements, turbidity, cleanli

10、ness checks, testing conditions, procedure English version Feather and down Test methods Determination of the turbidity of an aqueous extract Plumes et duvets Me thodes dessais De termination de la turbidite dun extrait aqueux Federn und Daunen Pru fverfahren Bestimmung der Tru bung eines wa ssrigen

11、 Extraktes This European Standard was approved by CEN on 13 August 1998. 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 bibliogra

12、phical 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 under the responsibility of a C

13、EN 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway

14、, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 1164:1998 BSI 03-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 222, Feather and down as filling material for any article, as well as finished articles filled with feather and down, the Secretar

15、iat 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 March 1999, and conflicting national standards shall be withdrawn at the latest by March 1999. Annex A is informative.

16、According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Por

17、tugal, Spain, Sweden, Switzerland and the United Kingdom.Page 3 EN 1164:1998 BSI 03-1999 1 Scope This European Standard 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 dissolved matter present

18、in the aqueous extract. 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, subsequent

19、 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, Textiles Standard atmospheres for conditioning and testing. (ISO

20、 139:1973) EN 20187, Paper, board and pulps Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples. (ISO 187:1990) EN ISO 3696, Water for analytical laboratory use Specification and test methods. (ISO 3696:1987) 3 Definitions For the

21、purposes of this standard the following definition applies. 3.1 turbidity reduction of transparency of the filtrate suspension caused by the presence of undissolved and dissolved matter 4 Principle A test specimen having a specified mass is mixed in water in the ratio 1:100 and correctly shaken. Aft

22、er filtration, the aqueous extract is gradually transferred into a graduated cylinder, on the bottom of which is a cross of specified dimensions, and the height of the suspension shall be determined when the cross is no longer visible. Go on filling the graduated cylinder for 20 mm at least and then

23、 let the aqueous extract gradually flow down, recording the height when the cross is visible again. The turbidity is given by the mean height of the determination during upward and downward phases. 5 Reagents Water, grade 3 in accordance with EN ISO 3696. 6 Conditioning and testing Conditioning and

24、testing shall be carried out in accordance with EN 20139 and the temperature and relative humidity shall be measured in accordance with EN 20187. 7 Apparatus 7.1 The turbidity meter (see Figure 1) consists of two parts: 7.1.1 A graduated transparent cylinder, higher than 300 mm and from 30 mm to 35

25、mm in diameter, graduated in 1 mm divisions. The cylinder is equipped with a pipe allowing the liquid to go in and out of the measuring device. On the flat bottom of the cylinder is fixed a disc of plastic material on which are two double black lines (1 0,02) mm apart, as long as the cylinder diamet

26、er, fast to light and resistant to water, and of width (0,5 0,02) mm and another two double black lines, with the same dimensions, perpendicular to the first ones. The cylinder is placed on top of a white surface. 7.1.2 A container, capacity 1 000 ml, mounted on a lifter acting in a communicative ve

27、ssel system, connected to the turbidity meter by a flexible tube connected to the pipe (see 7.1.1). NOTE The contrast of the two double black lines and the white material should be assessed for clarity. 7.2 Analytical balance, accurate to at least 10 mg. 7.3 Tumbler jar, capacity 2 000 ml. 7.4 Beake

28、r, capacity 2 000 ml. 7.5 Shaking machine, with 150 shakes per minute and with shaking swing of 40 mm or tumbling machine with 150 min 21 . 7.6 Sintered (fritted) filter, pore size index P 160 10 cm diameter (see ISO 4793). 7.7 Light source: north sky light or an equivalent source of illumination of

29、 about at least 600 lx 7.8 Lux meter, giving an indication of the room light. 8 Procedure 8.1 Place the conditioned test specimen of a representative part of the laboratory bulk sample (see prEN 1883) with a mass of (10 0,1) g in the tumbler jar, containing 1 000 ml of water (see clause 5). The jar

30、is tumbled at room temperature for (60 5) min. 8.2 Without wringing the excess water from the test specimen, filter the suspension through the sintered filter (7.6) and put the filtrate into the beaker (7.4).Page 4 EN 1164:1998 BSI 03-1999 8.3 Before starting the test check that the container is in

31、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 the top through the liquid, by normal vision or vision corrected to normal, the height of the filtrate as soon as the cross is no longe

32、r visible by the operator and record the height on the graduated cylinder in millimetres as H 1 . 8.7 Raise the container at least another 20 mm. 8.8 Gradually lower the container in such a way that the liquid flows out of the graduated cylinder. 8.9 Observe the height of the filtrate as soon as the

33、 cross is visible again by the operator and record the height on the graduated cylinder in millimetres as H 2 . 8.10 Compare H 1 and H 2 .I fH 1 and H 2 differ by more than 10 mm repeat the procedure from 8.4. If the difference persists, change the operator. If it cannot be cured, note the individua

34、l values in the test report. 8.11 Register the mean value of H 1 and H 2 . 8.12 Repeat the test on at least one other test specimen. The procedure described from 8.2 to 8.12 shall be repeated by another operator. 9 Expression of results Calculate: the mean values of H 1 in millimetres, to the neares

35、t millimetre; the mean values of H 2 in millimetres, to the nearest millimetre; the general mean of H 1 and H 2 in millimetres, rounded to the nearest multiple of five. 10 Test report The test report shall include at least the following information: a reference to this standard; date and place of te

36、sting; identification mark of the sample tested; the general mean of H 1 and H 2 in millimetres, rounded to the nearest multiple of five. When the difference between the mean of H 1 and the mean of H 2 is greater than 10 mm, in addition to the general mean these two means shall be reported in accord

37、ance with clause 9; any deviation from the standard procedure and any other circumstances that may have affected the result.Page 5 EN 1164:1998 BSI 03-1999 1 graduated cylinder 2 container 3 rod equipped with a device to raise and lower the container 4 disc with cross on the bottom of the graduated

38、cylinder 5 double black line Figure 1 Turbidity meterPage 6 EN 1164:1998 BSI 03-1999 Annex A (informative) Bibliography EN 1883, Feather and down Sampling in view of tests. ISO 4793, Laboratory sintered (fritted) filters Porosity grading, classification and designation.blankBSI 389 Chiswick High Roa

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