SIST EN 374-4:2014
(Main)Protective gloves against chemicals and micro-organisms - Part 4: Determination of resistance to degradation by chemicals
Protective gloves against chemicals and micro-organisms - Part 4: Determination of resistance to degradation by chemicals
This European Standard specifies the test method for the determination of the resistance of protective glove materials to degradation by chemicals with continuous contact. Other tests used to evaluate chemical resistance such as permeation resistance and penetration resistance may not provide sufficient information on the physical property changes affecting a glove during exposure to a chemical. Typically the outside surface of the glove shall be exposed to the chemical.
Schutzhandschuhe gegen Chemikalien und Mikroorganismen - Teil 4: Bestimmung des Widerstandes gegen Degradation von Chemikalien
Diese Europäische Norm legt das Prüfverfahren für die Bestimmung des Widerstands von Werkstoffen für Schutzhandschuhe gegen Degradation von Chemikalien bei ständigem Kontakt fest. Andere Prüfungen zur Beurteilung des chemischen Widerstands wie etwa Widerstand gegen Permeation und Widerstand gegen Penetration geben möglicherweise nicht ausreichend Informationen zu den Veränderungen der physikalischen Eigenschaften, die auf einen Handschuh während der Beanspruchung durch eine Chemikalie einwirken. Normalerweise muss die Außenseite des Handschuhs der Chemikalie ausgesetzt werden.
ANMERKUNG Ein zusätzliches Prüfverfahren ist in Anhang B angegeben. Dieses Verfahren ist nur für die Werkstoffbeurteilung bestimmt und berücksichtigt nicht die tatsächliche Verwendung einer Persönlichen Schutzausrüstung (PSA).
Gants de protection contre les produits chimiques et les micro-organismes - Partie 4: Détermination de la résistance à la dégradation par des produits chimiques
La présente norme spécifie la méthode d’essai pour la détermination de la résistance des matériaux des gants de protection à la dégradation par contact continu avec des produits chimiques. Les autres essais utilisés pour évaluer la résistance chimique telle que la résistance à la perméation et la résistance à la pénétration peuvent ne pas fournir suffisamment d’informations sur les changements de propriétés physiques affectant un gant lors d’une exposition à un produit chimique. Normalement la surface extérieure du gant doit être exposée au produit chimique.
Pour les besoins de la présente norme, les définitions données dans l’EN 374-1 s’appliquent.
NOTE Une autre méthode d’essai est donnée dans l’Annexe B. Cette méthode est uniquement dédiée à l’évaluation des matériaux et ne tient pas compte de l’usage réel d’un équipement de protection individuelle (EPI).
Varovalne rokavice za zaščito pred kemikalijami in mikroorganizmi - 4. del: Ugotavljanje odpornosti proti razkroju zaradi kemikalij
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Schutzhandschuhe gegen Chemikalien und Mikroorganismen - Teil 4: Bestimmung des Widerstandes gegen Degradation von ChemikalienGants de protection contre les produits chimiques et les micro-organismes - Partie 4: Détermination de la résistance à la dégradation par des produits chimiquesProtective gloves against chemicals and micro-organisms - Part 4: Determination of resistance to degradation by chemicals13.340.40Varovanje dlani in rokHand and arm protectionICS:Ta slovenski standard je istoveten z:EN 374-4:2013SIST EN 374-4:2014en01-februar-2014SIST EN 374-4:2014SLOVENSKI
STANDARD
SIST EN 374-4:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 374-4
November 2013 ICS 13.340.40 English Version
Protective gloves against chemicals and micro-organisms - Part 4: Determination of resistance to degradation by chemicals
Gants de protection contre les produits chimiques et les micro-organismes - Partie 4: Détermination de la résistance à la dégradation par des produits chimiques
Schutzhandschuhe gegen Chemikalien und Mikroorganismen - Teil 4: Bestimmung des Widerstandes gegen Degradation durch Chemikalien This European Standard was approved by CEN on 28 September 2013.
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 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 version 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, 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 Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 374-4:2013 ESIST EN 374-4:2014
EN 374-4:2013 (E) 2 Contents Page Foreword .3 1 Scope .4 2 Normative references .4 3 Terms and definitions .4 4 Test principles .4 5 Test methods, Puncture resistance test .4 5.1 Sampling .4 5.2 Apparatus .5 5.3 Procedure .5 5.3.1 Test conditions .5 5.3.2 Pre-testing measurements .5 5.3.3 Puncture testing.6 5.3.4 Expression of results .7 6 Test report .7 Annex A (informative)
Inter laboratory test on the present test method .9 Annex B (informative)
Weight change test . 10 B.1 General . 10 B.2 Sampling . 10 B.3 Apparatus . 10 B.4 Procedure . 10 B.4.1 Measurements . 10 B.4.2 Test conditions . 10 B.4.3 Procedure . 10 B.4.4 Calculation . 11 B.4.5 Expression of results . 11 B.5 Test report . 11 Annex ZA (informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 89/686/EEC . 13
SIST EN 374-4:2014
EN 374-4:2013 (E) 3 Foreword This document (EN 374-4:2013) has been prepared by Technical Committee CEN/TC 162 “Protective clothing including hand and arm protection and lifejackets”, the secretariat of which is held by DIN. 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 2014 and conflicting national standards shall be withdrawn at the latest by May 2014. Attention is drawn to the possibility 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 has been prepared under a mandate given to CEN by the European Commission and the Eu-ropean Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. EN 374 consists of the following parts under the general title, Protective gloves against chemicals and micro-organisms: — Part 1: Terminology and performance requirements; — Part 2: Determination of resistance to penetration; — Part 3: Determination of resistance to permeation by chemicals; — Part 4: Determination of resistance to degradation by chemicals. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, 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 the United Kingdom. SIST EN 374-4:2014
EN 374-4:2013 (E) 4 1 Scope This European Standard specifies the test method for the determination of the resistance of protective glove materials to degradation by dangerous chemicals with continuous contact. NOTE Annex A gives information on interlaboratory test results on this method. Other tests used to evaluate chemical resistance such as permeation resistance and penetration resistance may not provide sufficient information on the physical property changes affecting a glove during exposure to a chemical. It is necessary that the outside surface of the glove be exposed to the chemical. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 374-1:2003, Protective gloves against chemicals and micro-organisms - Part 1: Terminology and perfor-mance requirements EN 388:2003, Protective gloves against mechanical risks EN 420:2003+A1:2009, Protective gloves - General requirements and test methods 3 Terms and definitions For the purposes of this document, the terms and definition given in EN 374-1:2003 and EN 420:2003+A1:2009 apply. 4 Test principles The resistance of a protective glove material to degradation by a liquid chemical is determined by measuring the puncture resistance change of the glove material after a continuous contact with the external surface with the challenge test chemical. The test is applicable to gloves made of natural or synthetic polymer. Lined gloves may produce unusable measurement results. 5 Test methods, Puncture resistance test 5.1 Sampling Select three gloves for testing. Condition the gloves at (23 ± 2) °C, (50 ± 5) % relative humidity for at least 24 hours. In the case of irregular and/or multiple construction, one sample shall be tested from each area. Using the appropriate circular die of 20 mm, cut 6 specimens of each glove for a total of 18 test specimens. For each glove, 3 specimens will be exposed to the challenge chemical and 3 specimens will be unexposed. Select specimens so that they are homogeneous and representative of the glove’s primary construction. Avoid embossed patterned areas or other areas of varying thickness or composition when cutting these specimens. If a glove is constituted of several unbounded layers, only the layer giving the chemical protection shall be tested. The sample shall be tested according to the method described in 5.3. An additional non-mandatory informative test method is given as an example in Annex B. SIST EN 374-4:2014
EN 374-4:2013 (E) 5 For lined gloves, if it is not possible to separate the liner from the glove (and if the liner is too thick), the test may not be feasible, because it is not possible to seal the vial and the sample is moving. For certain samples, if there is a thick liner, it may not be necessary to use the septa to have a correct vial sealing. In this case, the
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.