1、February 2013Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 71.040.20!$RF“1944735www.din.deDDIN EN ISO 6556Laboratory glassware Filter flasks (ISO 6556:2012);English version EN ISO 6556:2012,English translation of DIN EN ISO 6556:2013-02Laborgerte aus Glas Saugflaschen (ISO 6556:2012);Englische Fassung EN ISO 6556:2012,Englische bersetzung von DIN EN ISO 6
3、556:2013-02Verrerie de laboratoire Fioles filtrer (ISO 6556:2012);Version anglaise EN ISO 6556:2012,Traduction anglaise de DIN EN ISO 6556:2013-02SupersedesDIN 12475:1996-01 andDIN 12476:1983-06www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comp
4、rises 16 pages02.13 DIN EN ISO 6556:2013-02 2 A comma is used as the decimal marker. Start of application The start of application of this standard is 2013-02-01. National foreword This standard includes safety requirements within the meaning of the Produktsicherheitsgesetz (ProdSG) (German Product
5、Safety Act). This standard has been prepared by Technical Committee ISO/TC 48 “Laboratory equipment” and has been adopted as European Standard EN ISO 6556:2012 by Technical Committee CEN/TC 332 “Laboratory equipment”, both secretariats are held by DIN, Germany. The responsible German body involved i
6、n its preparation was the Normenausschuss Laborgerte und Laborein-richtungen (Laboratory Devices and Installations Standards Committee), Working Committee NA 055-01-03 AA Glasgerte und Apparate. The series A filter flasks specified in this standard are equivalent to the filter flasks available in Ge
7、rmany which were covered by DIN 12475 and DIN 12476. Series B filter flasks are largely used in North America. German laboratory guidelines (see National Annex NA) require that the use of glassware with fragile hose connections, e.g. olives, be avoided wherever possible. Flasks with a tubular side-a
8、rm as shown in Figure 3 are much safer. When using such flasks, a vacuum rubber hose is inserted into the side-arm, as shown in the right-hand illustration of Figure 3. The advantages of such connections is a lower risk of breakage or rupture, less risk to the user, and the possibility of easily con
9、necting or disconnecting the vacuum hose with one hand. The DIN Standards corresponding to the International Standards referred to in this standard are as follows: ISO 383 DIN 12242-1 ISO 718 DIN ISO 718 ISO 3585 DIN ISO 3585 Amendments This standard differs from DIN 12475:1996-01 and DIN 12476:1983
10、-06 as follows: a) filter flasks of conical shape and of cylindrical shape have been combined in one standard; b) two series of filter flasks have been introduced in this standard; c) the material for filter flasks has been limited to borosilicate glass 3.3; d) dimensions and tolerances have been re
11、vised; e) alternative vacuum connections are permitted; f) marking requirements have been modified. Previous editions DIN 12475: 1953-01, 1996-01 DIN 12476: 1957-02, 1983-06 DIN EN ISO 6556:2013-02 3 National Annex NA (informative) Bibliography BGI/GUV-I 850-0, Sicheres Arbeiten in Laboratorien Grun
12、dlagen und Handlungshilfen1)DIN 12242-1, Laboratory glassware Interchangeable conical ground joints Dimensions, tolerances DIN ISO 718, Laboratory glassware Thermal shock and thermal shock endurance Test methods DIN ISO 3585, Borosilicate glass 3.3 Properties 1) Obtainable from: Deutsche Gesetzliche
13、 Unfallversicherung (DGUV), www.bgrci.de/praevention DIN EN ISO 6556:2013-02 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6556 October 2012 ICS 71.040.20 English Version Laboratory glassware - Filter flasks (ISO 6556:2012) Verrerie de laboratoire - Fiol
14、es filtrer (ISO 6556:2012) Laborgerte aus Glas - Saugflaschen (ISO 6556:2012) This European Standard was approved by CEN on 30 September 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 na
15、tional 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 v
16、ersion 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
17、, 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 Kingd
18、om. Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6556:2012: EEUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Cont
19、ents Page Foreword . 3 1 Scope . 4 2 Normative references. 4 3 Series and capacities . 4 4 Material 4 5 Construction . 4 5.1 ressure strength . 4 5.2 Shape . 4 5.3 Radius of curvature of base 5 5.4 Wall thickness 5 5.5 Neck . 5 5.6 Protective coating 5 6 Series A filter flasks . 5 6.1 Vacuum connect
20、ion (side-arm) . 5 6.2 Dimensions . 7 7 Series B filter flasks . 7 7.1 Vacuum connection (side-arm) . 7 7.2 Dimensions . 8 8 Thermal shock endurance . 8 9 Inscriptions . 8 Annex A (normative) Type test for pressure strength . 10 Bibliography 12 2DIN EN ISO 6556:2013-02 EN ISO 6556:2012 (E) Foreword
21、This document (EN ISO 6556:2012) has been prepared by Technical Committee ISO/TC 48 Laboratory equipment in collaboration with Technical Committee CEN/TC 332 “Laboratory equipment” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, eithe
22、r by publication of an identical text or by endorsement, at the latest by April 2013, and conflicting national standards shall be withdrawn at the latest by April 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 CE
23、NELEC 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 Repu
24、blic, 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. Endo
25、rsement notice The text of ISO 6556:2012 has been approved by CEN as a EN ISO 6556:2012 without any modification. “”3DIN EN ISO 6556:2013-02 EN ISO 6556:2012 (E) 1 ScopeThis International Standard specifies requirements to filter flasks with conical or cylindrical shape for general laboratory purpos
26、es.2 Normative referencesThe 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 718, Laboratory glass
27、ware Thermal shock and thermal shock endurance Test methodsISO 3585, Borosilicate glass 3.3 Properties3 Series and capacitiesTwo series of filter flasks are specified.Series A filter flasks have either a conical shape (see Figure 1) with nominal capacities of 100 ml, 250 ml, 500 ml, 1 000 ml and 2 0
28、00 ml, or a cylindrical shape (see Figure 2) with nominal capacities of 3 l, 5 l, 10 l, 15 l and 20 l.Series B filter flasks have a conical shape and a different choice of vacuum connections compared to Series A filter flasks and have nominal capacities of 25 ml, 50 ml, 125 ml, 250 ml, 500 ml, 1 000
29、 ml, 2 000 ml and 4 000 ml.4 MaterialFilter flasks shall be made of borosilicate glass 3.3 conforming with ISO 3585; the glass shall be reasonably free from residual strain and from glass defects which might impair safety, durability or appearance.5 Construction5.1 Pressure strengthFilter flasks sha
30、ll be constructed so as to withstand a pressure differential (external-internal) of 2 bar (1 bar = 105Pa), i.e. twice the pressure in normal use, when tested in accordance with the test method specified in Annex A.For this purpose, the dimensions given for wall thickness and radius of curvature give
31、n in Tables 1 to 3 shall be observed.5.2 ShapeFilter flasks shall be conical or cylindrical. The base of the flasks shall be so constructed that they stand vertically without rocking or spinning when placed on a level surface.4DIN EN ISO 6556:2013-02 EN ISO 6556:2012 (E) 5.3 Radius of curvature of b
32、aseThe base of the flask shall have a suitable radius of curvature in order to provide a smooth transition between the base and the side. The radius shall be not less than that given in Tables 1 to 3.5.4 Wall thicknessThe flask shall be blown so as to achieve a good distribution of glass in the moul
33、d without sudden changes in wall thickness. In order to meet the requirements of 5.1, the thinnest areas shall have a thickness not less than the minimum values specified in Tables 1 to 3.5.5 NeckThe top of the neck shall be formed to provide suitable strength. The neck may be slightly tapered or cy
34、lindrical; alternatively, it may be manufactured with an interchangeable joint of appropriate size selected from ISO 383.5.6 Protective coatingFor protection against mechanical damage (impact or shock), filter flasks may have an external plastic coating.6 Series A filter flasks6.1 Vacuum connection
35、(side-arm)The vacuum connection shall be placed just at, or below, the cylindrical part of the neck (see Figure 1 and Figure 2). Three types of vacuum connection are described:a) a tubular side-arm as shown in Figure 3 with a taper of 1:5 to 1:10;b) an integral side-arm with a glass round thread as
36、shown in Figure 4;c) a detachable side-arm; a typical arrangement with a resilient grommet is shown in Figure 5. A detachable side-arm may also be provided with an appropriate glass round thread.5DIN EN ISO 6556:2013-02 EN ISO 6556:2012 (E) Key1 vacuum connectionFigure 1 Conical shapeKey1 vacuum con
37、nectionFigure 2 Cylindrical shape6DIN EN ISO 6556:2013-02 EN ISO 6556:2012 (E) 6.2 DimensionsSeries A filter flasks of conical shape shall comply with the dimensions given in Table 1. Series A filter flasks of cylindrical shape shall comply with the dimensions in Table 2.Table 1 Dimensions for Serie
38、s A conical shapesDimensions in millimetresNominal sizemld13d21,5h3rmin.s1min.s2min.100 70 24 105 12 1,7 1,2250 85 35 155 12 2,4 1,3500 105 35 185 15 3 1,41 000 135 45 230 20 3,8 1,62 000 165 60 255 35 4,2 1,8Table 2 Dimensions for Series A cylindrical shapesDimensions in millimetresNominal sizeld15
39、d21,5h5r1r2s1min.s2min.3 170 70 295 28 40 4,7 45 185 80 360 30 48 5,1 410 237 80 420 48 54 6,4 415 257 85 500 48 58 7,0 420 287 85 535 60 79 7,7 47 Series B filter flasks7.1 Vacuum connection (side-arm)The vacuum connection shall be placed near the neck-to-body junction, and sufficiently below the t
40、op of the neck that a potential blockage of the vacuum inlet by neck closures is avoided.The following types of vacuum connection are described:a) plain, without provision for direct connection to vacuum tubing;b) with integral side-arm:1) tubular side-arm with corrugated outside surface for interfa
41、cing with the inside of vacuum tubing;2) tubular side-arm with tapered cone for interfacing with the outside of vacuum tubing;3) tubular side-arm with glass round thread for interfacing with a matching connector;c) with replaceable side-arm of glass or plastic material:1) straight;2) angled;3) multi
42、ple replaceable side-arms.7DIN EN ISO 6556:2013-02 EN ISO 6556:2012 (E) 7.2 DimensionsSeries B filter flasks shall comply with the dimensions given in Table 3.Table 3 Dimensions for Series B filter flasksDimensions in millimetresNominal sizemld1max.hmax.rmin.s1min.25 41 77 6 1,050 52 85 6 1,5125 71
43、115 12 1,5250 86 160 12 1,8500 108 190 15 2,01 000 138 245 20 2,02 000 170 305 23 2,54 000 210 385 26 3,08 Thermal shock enduranceFilter flasks shall be type tested to comply with a thermal shock endurance of 75 C in accordance with ISO 718.9 InscriptionsThe following inscriptions shall be permanent
44、ly and legibly marked on all filter flasks:a) the nominal capacity of the flask, for example “100 ml”;b) the makers and/or vendors name or mark;c) the type of glass from which the flask is made, if not identified by the makers name or mark.Figure 3 Tubular side-arm and inserted vacuum rubber tubeFig
45、ure 4 Integral side-arm with glass round thread8DIN EN ISO 6556:2013-02 EN ISO 6556:2012 (E) Figure 5 Detachable side-arm9DIN EN ISO 6556:2013-02 EN ISO 6556:2012 (E) Annex A (normative) Type test for pressure strengthA.1 GeneralThe filter flask is tested in a pressure vessel by subjecting it to a h
46、ydraulic external pressure of 2 bar for 1 min.A.2 ApparatusA.2.1 Pressure vessel, provided with a pressure gauge and connected to a water reservoir fitted with a ram pump and a release valve discharging back into the reservoir. The lid of the pressure vessel can be fastened to the vessel by means of
47、 wing-nuts for ease of operation.The recommended apparatus is illustrated in Figure A.1.A.3 ProcedureClose the filter flask by appropriate means, for example stoppers, the interior of the filter flask being under atmospheric pressure (about 1 bar). To ensure submersion, hold the filter flask in the
48、pressure vessel in some holding device; alternatively, place weights wrapped in paper or cloth inside it. Having placed the filter flask in position and fastened the lid, fill the pressure vessel with water and bring up the gauge pressure to 2 bar by working the ram pump and release it immediately a
49、fter 1 min.A.4 ResultThe filter flask shall be taken to have satisfied the requirement of the test if it withstands the hydraulic external pressure of 2 bar for 1 min.10DIN EN ISO 6556:2013-02 EN ISO 6556:2012 (E) Key1 pressure relief valve2 funnel3 pressure gauge4 pump5 valves6 reservoirFigure A.1 Test rig for pressure strength11DIN EN ISO 6556:2013-02 EN ISO 6556:2012 (E) Bibliography1 ISO 383, Laboratory glassware Interchangeable
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