1、BS EN1822-1:2009ICS 13.040.40; 23.120NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDHigh efficiency airfilters (EPA, HEPA andULPA)Part 1: Classification, performancetesting, markingThis British Standardwas published under theauthority of the StandardsPolicy and
2、 StrategyCommittee on 31 December2009 BSI 2009ISBN 978 0 580 61789 8Amendments/corrigenda issued since publicationDate CommentsBS EN 1822-1:2009National forewordThis British Standard is the UK implementation of EN 1822-1:2009. Itsupersedes BS EN 1822-1:1998 which is withdrawn.The UK participation in
3、 its preparation was entrusted to TechnicalCommittee MCE/21/3, Air filters other than for air supply for I.C.engines and compressors.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisi
4、onsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 1822-1:2009EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1822-1 November 2009 ICS 13.040.40 Supersedes EN 1822-1:1998English Version High e
5、fficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking Filtres air haute efficacit (EPA, HEPA et ULPA) - Partie 1: Classification, essais de performance et marquage Schwebstofffilter (EPA, HEPA und ULPA) - Teil 1: Klassifikation, Leistungsprfung, Kennzeichn
6、ung This European Standard was approved by CEN on 17 October 2009. 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 bibliographical
7、 references concerning such national standards may be obtained on application to the CEN Management Centre 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 CEN m
8、ember into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Ital
9、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000
10、 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1822-1:2009: E2 Contents Page Foreword 3Introduction 41 Scope . 52 Normative references . 53 Terms and definitions 54 Symbols and abbreviations . 55 Classification 65.1
11、 General 65.2 Groups of filters 65.3 Groups and Classes of filters . 66 Requirements 76.1 General 76.2 Material 76.3 Nominal air volume flow rate 76.4 Pressure difference 76.5 Filtration performance . 77 Test methods 87.1 Test rigs . 87.2 Test conditions . 87.3 Test aerosols 97.4 Survey of test proc
12、edures . 97.4.1 General 97.4.2 Step 1: Testing sheet filter medium 97.4.3 Step 2: Leak test of the filter element. 97.4.4 Step 3: Efficiency test of the filter element 97.4.5 Remarks 97.5 Test procedures 107.5.1 Testing sheet filter media 107.5.2 Leak test of the filter element 137.5.3 Efficiency te
13、st of the filter element . 178 Assessment of the filter, documentation, test reports . 199 Marking 19Bibliography . 20BS EN 1822-1:2009 EN 1822-1:2009 (E)3 Foreword This document (EN 1822-1:2009) has been prepared by Technical Committee CEN/TC 195 “Air filters for general air cleaning”, the secretar
14、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 May 2010, and conflicting national standards shall be withdrawn at the latest by May 2010. Attention is drawn to the po
15、ssibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1822-1:1998. It is dealing with the performance testing of efficient particulate air f
16、ilters (EPA), high efficiency particulate air filters (HEPA) and ultra low penetration air filters (ULPA) at the manufacturers site. EN 1822, High efficiency air filters (EPA, HEPA and ULPA), consists of the following parts: Part 1: Classification, performance testing, marking Part 2: Aerosol produc
17、tion, measuring equipment, particle counting statistics Part 3: Testing flat sheet filter media Part 4: Determining leakage of filter elements (scan method) Part 5: Determining the efficiency of filter elements This European Standard is based on particle counting methods which actually cover most ne
18、eds of different applications. The difference between this European Standard and its previous edition lies in the addition of: an alternative test method for using a solid, instead of a liquid, test aerosol; a method for testing and classification of filters made out of membrane type filter media; a
19、 method for testing and classification filters made out of synthetic fibre media; and an alternative method for leak testing of group H filters with other than panel shape. Beside that, various editorial corrections have been implemented. According to the CEN/CENELEC Internal Regulations, the nation
20、al standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Po
21、land, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 1822-1:2009 EN 1822-1:2009 (E)4 Introduction As decided by CEN/TC 195, this European Standard is based on particle counting methods which actually cover most needs of different applications. The dif
22、ference between this European Standard and previous national standards lies in the technique used for the determination of the integral efficiency. Instead of mass relationships, this technique is based on particle counting at the most penetrating particle size (MPPS), which is for micro-glass filte
23、r mediums usually in the range of 0,12 m to 0,25 m. For Membrane filter media, separate rules apply, see Annex A of EN 1822-5:2009. This method also allows testing ultra low penetration air filters, which was not possible with the previous test methods because of their inadequate sensitivity. BS EN
24、1822-1:2009 EN 1822-1:2009 (E)5 1 Scope This European Standard applies to high efficiency particulate and ultra low penetration air filters (EPA, HEPA and ULPA) used in the field of ventilation and air conditioning and for technical processes, e.g. for applications in clean room technology or pharma
25、ceutical industry. It establishes a procedure for the determination of the efficiency on the basis of a particle counting method using a liquid (or alternatively a solid) test aerosol, and allows a standardized classification of these filters in terms of their efficiency, both local and integral eff
26、iciency. 2 Normative references The 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. EN 1822-2:2009, H
27、igh efficiency air filters (EPA, HEPA and ULPA) Part 2: Aerosol production, measuring equipment, particle counting statistics EN 1822-3, High efficiency air filters (EPA, HEPA and ULPA) Part 3: Testing flat sheet filter media EN 1822-4:2009, High efficiency air filters (EPA, HEPA and ULPA) Part 4: D
28、etermining leakage of filter elements (scan method) EN 1822-5:2009, High efficiency air filters (EPA, HEPA and ULPA) Part 5: Determining the efficiency of filter elements EN 14799:2007, Air filters for general air cleaning Terminology EN ISO 5167-1, Measurement of fluid flow by means of pressure dif
29、ferential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements (ISO 5167-1:2003) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14799:2007 and the following apply. 3.1 nominal air volume flow ra
30、te air volume flow rate specified by the manufacturer, at which the filter element has to be tested 3.2 superficial face area cross-sectional area of the filter element which is passed by the air flow 3.3 nominal filter medium face velocity nominal air volume flow rate divided by the effective filte
31、r medium area 4 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply: BS EN 1822-1:2009 EN 1822-1:2009 (E)6 dpParticle diameter E Efficiency P Penetration p Pressure RH Relative humidity T Temperature gGeometric standard deviation CNC Condensatio
32、n nucleus counter DEHS Sebacic acid-bis (2 ethyl hexyl-) ester (trivial name: di-ethyl-hexyl-sebacate) DMA Differential electric mobility analyser DMPS Differential mobility particle sizer DOP Phthalic acid-bis (2-ethyl hexyl-) ester (trivial name: di-octyl-phthalate) MPPS Most penetrating particle
33、size (= particle size, for which the filtration efficiency is a minimum) OPC Optical particle counter PSL Poly-Styrol Latex (solid spheres) 5 Classification 5.1 General Filter elements are classified in groups and classes according to their filtration performance (efficiency or penetration). 5.2 Gro
34、ups of filters According to this standard, filter elements fall into one of the following Groups: Group E: EPA filters (Efficient Particulate Air filter); Group H: HEPA filters (High Efficiency Particulate Air filter); Group U: ULPA filters (Ultra Low Penetration Air filter). 5.3 Groups and Classes
35、of filters Filters are classified in Groups and Classes. For each group a slightly different test procedure applies. All filters are classified according to their filtration performance (see 6.5). Group E filters are subdivided in three Classes: Class E 10; BS EN 1822-1:2009 EN 1822-1:2009 (E)7 Clas
36、s E 11; Class E 12. Group H filters are subdivided in two Classes: Class H 13; Class H 14. Group U filters are subdivided in three Classes: Class U 15; Class U 16; Class U 17. 6 Requirements 6.1 General The filter element shall be designed or marked so as to prevent incorrect mounting. The filter el
37、ement shall be designed so that when correctly mounted in the ventilation duct, no leak occurs along the sealing edge. If, for any reason, dimensions do not allow testing of a filter under standard test conditions, assembly of two or more filters of the same type or model is permitted, provided no l
38、eaks occur in the resulting filter. 6.2 Material The filter element shall be made of suitable material to withstand normal usage and exposures to those temperatures, humidities and corrosive environments that are likely to be encountered. The filter element shall be designed so that it will withstan
39、d mechanical constraints that are likely to be encountered during normal use. Dust or fibres released from the filter media by the air flow through the filter element shall not constitute a hazard or nuisance for the people (or devices) exposed to filtered air. 6.3 Nominal air volume flow rate The f
40、ilter element shall be tested at its nominal air volume flow rate for which the filter has been designed by the manufacturer. 6.4 Pressure difference The pressure difference across the filter element is recorded at the nominal air volume flow rate. 6.5 Filtration performance The filtration performan
41、ce is expressed by the efficiency or the penetration of MPPS particles. BS EN 1822-1:2009 EN 1822-1:2009 (E)8 After testing in accordance with Clause 7, filter elements are classified according to Table 1, on the bases of their integral (Group E) or their integral AND local (Groups H and U) MPPS eff
42、iciency or penetration. Filters with filter media having an electrostatic charge are classified according to Table 1, on the bases of their discharged efficiency or penetration as per EN 1822-5:2009, Annex B. Table 1 Classification of EPA, HEPA and ULPA filters Filter Group Integral value Local valu
43、e a bFilter Class Efficiency (%) Penetration (%) Efficiency (%) Penetration (%) E 10 85 15 -c-cE 11 95 5 -c-cE 12 99,5 0,5 -c-cH 13 99,95 0,05 99,75 0,25 H 14 99,995 0,005 99,975 0,025 U 15 99,999 5 0,000 5 99,997 5 0,002 5 U 16 99,999 95 0,000 05 99,999 75 0,000 25 U 17 99,999 995 0,000 005 99,999
44、9 0,000 1 aSee 7.5.2 and EN 1822-4. bLocal penetration values lower than those given in the table may be agreed between supplier and purchaser. cGroup E filters (Classes E10, E11 and E12) cannot and shall not be leak tested for classification purposes. 7 Test methods 7.1 Test rigs The test rigs are
45、described in detail in EN 1822-3, EN 1822-4 and EN 1822-5. The individual methods of measurement and the measuring instruments are described in EN 1822-2. 7.2 Test conditions The air in the test channel used for testing shall comply with the following requirements: Temperature: (23 5) C; Relative hu
46、midity 75 %. The temperature shall remain constant during the entire test procedure within 2 C the relative humidity within 5 %. The cleanliness of the test air shall be ensured by appropriate pre-filtering, so that in operation without addition of aerosol the particle number concentration measured
47、with the particle counting method is less than 350 000 m-3. The test specimen shall have the same temperature as the test air. BS EN 1822-1:2009 EN 1822-1:2009 (E)9 7.3 Test aerosols For the testing of EPA, HEPA and ULPA filters in accordance with this standard, a liquid test aerosol shall be used.
48、Alternatively a solid aerosol may be used for leak testing (see EN 1822-4:2009, Annex D). Possible aerosol substances include but are not limited to DEHS, PAO and PSL. For further details, see EN 1822-2:2009, 4.2. NOTE The use of alternative materials for challenge aerosols may also be agreed betwee
49、n supplier and purchaser when the materials specified in this standard are unacceptable. The concentration and the size distribution of the aerosol shall be constant over time. For the leak testing and the efficiency test of the filter element the mean particle diameter of the test aerosol shall correspond to the most pene
