EN ISO 24998:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Laborgeräte aus Kunststoff - Einmal-Petrischalen für mikrobiologische Verfahren (ISO 24998:2008)Matériel de laboratoire en matiere plastique - Boîtes de Petri a usage unique pour méthodes microbiologiques (ISO 24998:2008)Plastics laboratory ware - Single use Petri dishes for microbiological procedures (ISO 24998:2008)71.040.20Laboratorijska posoda in aparatiLaboratory ware and related apparatusICS:Ta slovenski standard je istoveten z:EN ISO 24998:2008SIST EN ISO 24998:2009en01-februar-2009SIST EN ISO 24998:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 24998November 2008ICS 71.040.20 English VersionPlastics laboratory ware - Single-use Petri dishes formicrobiological procedures (ISO 24998:2008)Matériel de laboratoire en matière plastique - Boîtes dePetri à usage unique pour méthodes microbiologiques (ISO24998:2008)Laborgeräte aus Kunststoff - Einmal-Petrischalen fürmikrobiologische Verfahren (ISO 24998:2008)This European Standard was approved by CEN on 29 October 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 24998:2008: ESIST EN ISO 24998:2009

Reference numberISO 24998:2008(E)© ISO 2008
INTERNATIONAL STANDARD ISO24998First edition2008-11-15Plastics laboratory ware — Single-use Petri dishes for microbiological procedures Matériel de laboratoire en matière plastique — Boîtes de Petri à usage unique pour méthodes microbiologiques
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ii © ISO 2008 – All rights reserved
ISO 24998:2008(E) © ISO 2008 – All rights reserved iiiContents Page Foreword.iv 1 Scope.1 2 Terms and definitions.1 3 Principle of use.1 4 Types.2 5 Material.2 6 Design and construction.2 6.1 General.2 6.2 Dimensions.2 6.3 Rim on lid.3 6.4 Compartments.3 6.5 Venting.3 7 Performance.4 7.1 Rigidity.4 7.2 Resistance to thermal distortion.4 7.3 Resistance to fracture.4 7.4 Stability in stacking.4 8 Limitation of contamination.4 9 Sterility and special microbiological states.4 10 Packaging.5 11 Marking.5 Annex A (normative)
Type test for rigidity.6 Annex B (normative)
Type test for resistance to thermal distortion.8 Annex C (normative)
Type test for resistance to fracture.9 Annex D (normative)
Type test for stability in stacking.10 Bibliography.11
ISO 24998:2008(E) iv © ISO 2008 – All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 24998 was prepared by Technical Committee ISO/TC 48, Laboratory equipment, Subcommittee SC 6, Laboratory and volumetric ware.
INTERNATIONAL STANDARD ISO 24998:2008(E) © ISO 2008 – All rights reserved 1Plastics laboratory ware — Single-use Petri dishes for microbiological procedures 1 Scope This International Standard specifies requirements and test methods for plain, single-use Petri dishes for microbiological use. This International Standard does not apply to products of similar design which may be used for cell or tissue culture purposes. Neither does it apply to dishes supplied ready loaded with microbiological media. NOTE Petri dishes are used for microbiological routine purposes in very large numbers and consequently, are often handled by robotic equipment. Users of such equipment should satisfy themselves that the Petri dishes of any given manufacturer are suitable for use with such equipment and, if obtained from several sources, are compatible if mixed. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 Petri dish combination of a dish with an accompanying loose-fitting lid, intended to preserve the microbiological integrity of its unused or in-use enclosed, interior space 2.2 dish shallow, cylindrical or square, open-topped container comprising a plane base with an integral outer wall NOTE The dish can be subdivided with internal dividers to form separate compartments. 2.3 lid cover of similar shape to, and larger size than the dish, over which it is placed, inverted, to enclose a working volume NOTE The underside of the lid can incorporate one or more small protuberances (venting protrusions) to facilitate free circulation of environmental gases. Lids without such protrusions are designed to impede such free circulation. 3 Principle of use Under environmentally controlled conditions, selected to avoid introduction of unwanted micro-organisms, the lid of the Petri dish is lifted and a quantity of microbiologically nutrient medium introduced (poured) into the dish. The dish is recovered and allowed to equilibrate with a predetermined environment. Under similarly suitable conditions, the lid is lifted again and a sample under investigation is then introduced onto the medium in the dish. Following closure and a period of storage under predetermined conditions, growth of any microorganisms originating from the sample may have occurred, enabling further study. NOTE Attention is drawn to potential national or regional regulations in respect of safe and environmentally compatible disposal of used Petri dishes. SIST EN ISO 24998:2009

ISO 24998:2008(E) 2 © ISO 2008 – All rights reserved 4 Types Four types of dish are specified in this International Standard. Type A: circular dishes, without internal dividers, with or without venting protrusions in the lid Type B: circular dishes, with internal dividers, with or without venting protrusions in the lid Type C: square dishes, without internal dividers, with or without venting protrusions in the lid Type D: square dishes, with internal dividers, with or without venting protrusions in the lid NOTE There can be variants of Type A to Type D in respect of design and construction as given in Clause 6. In that case, detailed specifications are given by the manufacturer. 5 Material The Petri dish shall be made from microbiologically inert transparent plastic and may be self-coloured for batch identification purposes, or colourless. The finished dish shall be free from colour variation or discolouration and physical defects such as striations which may impair its use in microbiology. 6 Design and construction 6.1 General When subjected to visual examination, the Petri dish shall have no sharp edges, p
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