SIST EN 455-4:2009

Medical gloves for single use - Part 4: Requirements and testing for shelf life determination

Medicinske rokavice za enkratno uporabo - 4. del: Zahteve in preskusi za določanje roka uporabnosti

General Information

• Status: Published
• Technical Committee: COVID 19 - COVID 19 - ISO
• Directive: standardi COVID-19 - UPDATE ON THE AVAILABILITY OF CEN, CENELEC, ISO, IEC STANDARDS AND THEIR NATIONAL ADOPTIONS IN RESPONSE TO THE COVID-19 OUTBREAK

Standards Content (Sample)

Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
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SLOVENSKI STANDARD
SIST EN 455-4:2009
01-oktober-2009
0HGLFLQVNHURNDYLFH]DHQNUDWQRXSRUDERGHO=DKWHYHLQSUHVNXVL]D
GRORþDQMHURNDXSRUDEQRVWL
Medical gloves for single use - Part 4: Requirements and testing for shelf life
determination
Medizinische Handschuhe zum einmaligen Gebrauch - Teil 4: Anforderungen und
Prüfung zur Bestimmung der Mindesthaltbarkeit
Gants médicaux non réutilisables - Partie 4: Exigences et essais relatifs à la
détermination de la durée de conservation
Ta slovenski standard je istoveten z: EN 455-4:2009
ICS:
11.140 Oprema bolnišnic Hospital equipment
SIST EN 455-4:2009 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
Samo za branje. Kopiranje in posredovanje prepovedano. © SIST 2020-04-10

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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
Samo za branje. Kopiranje in posredovanje prepovedano. © SIST 2020-04-10
EUROPEAN STANDARD
EN 455-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2009
ICS 11.140
English Version
Medical gloves for single use - Part 4: Requirements and testing
for shelf life determination
Gants médicaux non réutilisables - Partie 4: Exigences et Medizinische Handschuhe zum einmaligen Gebrauch - Teil
essais relatifs à la détermination de la durée de 4: Anforderungen und Prüfung zur Bestimmung der
conservation Mindesthaltbarkeit
This European Standard was approved by CEN on 20 June 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 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 member 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, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 455-4:2009: E
worldwide for CEN national Members.

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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
Samo za branje. Kopiranje in posredovanje prepovedano. © SIST 2020-04-10
EN 455-4:2009 (E)
Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Requirements .6
4.1 General .6
4.2 Shelf life and resistance to degradation .7
4.3 Product changes.7
4.4 Labelling .7
4.5 Sterile barrier integrity .7
4.6 Storage conditions .7
5 Test methods .7
5.1 Real time shelf life determination .7
5.2 Accelerated shelf life determination .8
6 Test report .8
Annex A (normative) Method for the determination of shelf life by real time stability studies .9
Annex B (informative) Guidance on conducting and analyzing accelerated ageing studies . 10
Annex C (informative) Determination of the shelf life of a significantly modified product . 17
Annex ZA (informative) Relationship between this European Standard and the Essential Requirements
of EU Directive 93/42/EEC Medical Devices . 18
Bibliography . 19

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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
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EN 455-4:2009 (E)
Foreword
This document (EN 455-4:2009) has been prepared by Technical Committee CEN/TC 205 “Non-active medical
devices”, 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 January 2010, and conflicting national standards shall be withdrawn at the latest by
January 2010.
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 part of EN 455 gives requirements and test methods for shelf life determination of medical gloves as part of a
risk management process, in accordance with EN ISO 14971. EN 455 consists of the following parts under the
general title "Medical gloves for single use":

 Part 1: Requirements and testing for freedom from holes
 Part 2: Requirements and testing for physical properties
 Part 3: Requirements and testing for biological evaluation
 Part 4: Requirements and testing for shelf life determination
This document has been prepared under a mandate given to CEN by the European Commission and the European
Free Trade Association, and supports essential requirements of EC Directive 93/42/EEC.
For relationship with EC Directive 93/42/EEC, see informative Annex ZA, which is an integral part of this document.
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, 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 the United
Kingdom.
3

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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
Samo za branje. Kopiranje in posredovanje prepovedano. © SIST 2020-04-10
EN 455-4:2009 (E)
Introduction
Medical Gloves are intended to be a barrier to agents responsible for the transmission of infections. In order to help
ensure effectiveness, it is essential that gloves fit the hand properly, are free from holes and have adequate physical
strength so as not to fail during use. All these issues are addressed in the EN 455 series.
This European Standard covers the minimum properties that address certain essential requirements detailed in the
Medical Devices Directive (93/42/EEC). Manufacturers are required to conduct stability tests to estimate the shelf life
of any new or modified glove before the product is placed on the market and to initiate real time stability studies. The
real time stability test can be considered as part of the manufacturers' requirement to conduct post-marketing
surveillance on their products. These requirements are intended to ensure that manufacturers have adequate data to
support shelf life claims before products are placed on the market and that these data are available for review by
regulatory authorities.
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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
Samo za branje. Kopiranje in posredovanje prepovedano. © SIST 2020-04-10
EN 455-4:2009 (E)

1 Scope
This part of EN 455 specifies requirements for shelf life for medical gloves for single use. It also specifies the
requirements for labelling and the disclosure of information relevant to the test methods used.
This European Standard applies to existing, new and significantly changed designs. Existing designs that do not
currently have ageing data available should generate that data within a reasonable period of time.
This European Standard does not specify the size of a lot. Attention is drawn to the difficulties that can be associated
with the distribution and control of very large lots. The recommended maximum individual lot size for production is
500 000.
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 455 (all parts), Medical gloves for single use
EN 1041, Information supplied by the manufacturer of medical devices
EN ISO 11607 (all parts), Packaging for terminally sterilized medical devices
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
Arrhenius equation
relation between the activation energy (E ), the absolute temperature (T), and the rate constant of a degradation
A
reaction [k(T)]
NOTE The shelf life of a rubber product is predicted based on the Arrhenius principle of chemical reaction rates. The
Arrhenius equation has the basic form:
−E
A
RT
k( T )= A⋅e

where
-1
A = constant (min ),
E = Activation Energy (J/mol),
A
-1 -1
R = the Universal Gas Constant (8,314 J · mol · K ),
T = Absolute Temperature (K),
-1
k(T) (min ) is the rate constant for the degradation process.
An alternate way of expressing the Arrhenius equation is:
5

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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
Samo za branje. Kopiranje in posredovanje prepovedano. © SIST 2020-04-10
EN 455-4:2009 (E)
E
A
ln ( )= ln − ( )
k T A
RT
The time required for the physical properties to deteriorate to the threshold value is inversely proportional to the rate constant k(T).
3.2
consumer package
package, intended for distribution to a consumer, containing loose gloves or individual pairs of gloves
NOTE For example a primary pack (peelpack) for sterile product or a dispenser box for non-sterile product.
3.3
expiry date
stated date after which the gloves shall not be used
3.4
lot
collection of gloves of the same design, colour, shape, size and formulation, manufactured at essentially the same
time, using the same process, raw materials of the same specifications, common equipment and packed in the same
type of individual container

3.5
shelf life
time from date of manufacture to the claimed expiry date
3.6
significant change
change that could reasonably be expected to impact the safety or effectiveness of a medical device
NOTE It could include a change to any of the following:
a) the manufacturing process, facility or equipment;
b) the manufacturing quality control procedures, including the methods, tests or procedures used to control the quality,
purity and sterility of the device or of the materials used in its manufacture;
c) the design of the device, including its performance characteristics, principles of operation and specifications of
materials; and
d) the intended use of the device, including any new or extended use, any addition or deletion of a contra-indication
for the device and any change to the period used to establish its expiry date.
3.7
threshold value
maximum or minimum value for a property being tested
4 Requirements
4.1 General
Medical gloves shall comply with the requirements of the EN 455 series of standards until the end of their stated shelf
life provided they are stored according to the instructions supplied by the manufacturer.
Manufacturers shall test the properties that are reasonably expected to alter over the shelf life of the product. These
properties shall include, but are not limited to, force at break, freedom from holes and, in the case of sterile gloves,
pack integrity. This European Standard defines the methods to determine shelf life of medical gloves before any new
product or products for which there has been a significant change to formulation or process can be marketed.
6

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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
Samo za branje. Kopiranje in posredovanje prepovedano. © SIST 2020-04-10
EN 455-4:2009 (E)
Since it is impracticable to complete real time ageing studies before introducing products to the market, accelerated
stability studies based on kinetic principles can be used to assign a provisional shelf life. Such provisional shelf lives
assigned shall be verified by real time studies.
Shelf life claims based on accelerated ageing shall not exceed three years. Data supporting the shelf life claims
made by the manufacturer shall be made available on request.
4.2 Shelf life and resistance to degradation
Before a new or significantly modified product is placed on the market this European Standard requires:
 a completed real time study as described in 5.1 to determine shelf life or
 a real time study as described in 5.1 to determine shelf life shall have commenced and an accelerated ageing
study as described in 5.2 shall have been completed.
It is recommended that the shelf life should be determined at the specific storage conditions specified for the product
by the manufacturer (e.g. 25 °C). The manufacturer shall state the temperature along with the shelf life or expiry date.
Accelerated ageing studies (5.2) shall be carried out on gloves from the same production lots as used for real time
determination of shelf life (5.1).
NOTE For guidance on mean kinetic temperature see EN ISO 291.
4.3 Product changes
Whenever there is any significant change to the product the manufacturer shall re-determine shelf life.
4.4 Labelling
At the end of the shelf life the labelling shall remain readable according to EN 1041.
4.5 Sterile barrier integrity
For sterile products the requirements of EN ISO 11607 series apply. Attention is drawn to the maintenance of the
sterility for the given shelf life of the product.
NOTE Depending on the utilised packaging material, it might occur that the packaging material will not withstand certain
elevated temperatures that are being used to predict the shelf life by means of accelerated ageing testing. In these cases it might
be advisable to conduct the accelerated ageing testing at lower temperatures.
4.6 Storage conditions
Manufacturers shall provide storage instructions to the end user. These may be printed on the consumer package or
supplied in an accompanying document.
5 Test methods
5.1 Real time shelf life determination
The test method for the determination of shelf life using real time studies shall be that given in Annex A or a suitably
validated method that has been shown to be equivalent to Annex A.
If the real time data indicates a shorter shelf life than that claimed on the basis of accelerated ageing the
manufacturer shall notify the relevant regulatory authorities. The manufacturer shall change the shelf life claims for
7

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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
Samo za branje. Kopiranje in posredovanje prepovedano. © SIST 2020-04-10
EN 455-4:2009 (E)
the product to one based upon the real time study. For gloves placed on the market, real time stability studies shall
be completed for the full period of the shelf life claim.
5.2 Accelerated shelf life determination
Pending the completion of real time studies, accelerated stability studies shall be used to estimate the shelf life.
Examples of methods for accelerated studies and data analysis are provided in Annex B. Data generated from such
studies shall support the claim that the gloves fulfil the requirements in Clause 4 for the duration of the labelled shelf
life at temperature as determined by the manufacturer.
NOTE Guidance for selection of temperature is given in EN ISO 2578.
6 Test report
The test report shall contain at least the following information:
a) Reference to the appropriate standards;
b) Sample details:
1) Complete identification of the material tested;
2) Dimensions and method of the preparation of the test pieces, with reference to relevant European
Standards;
3) Selected properties, with reference to relevant European Standards;
4) Threshold value of the selected property;
5) Times and temperatures of the conditioning of test pieces;
c) Details of the ageing conditions;
d) Test data and analysis according to the relevant standards;
e) Confirmed shelf life claim.
8

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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
Samo za branje. Kopiranje in posredovanje prepovedano. © SIST 2020-04-10
EN 455-4:2009 (E)
Annex A
(normative)

Method for the determination of shelf life by real time stability studies
A.1 Principle
Gloves in consumer packages are conditioned at the temperature as defined by the manufacturer (e.g. 25 °C) for the
intended shelf life period and then tested for compliance.
NOTE 25 °C is the mean kinetic temperature for temperate climates.
A.2 Procedure
A sufficient number of gloves (taken from a minimum of three lots of gloves packed in their consumer packaging or,
in the case of sterile gloves, the peelpack) shall be placed in a specified environment and conditioned to assess at
intervals of one year or less:
a) median of the Force at Break (13 gloves per interval) according to EN 455-2,
b) freedom from holes according to according to EN 455-1,
c) that the glove is fit for the intended purpose, and
d) pack integrity (sterile gloves).
The lots shall be tested individually and the results for each lot reported individually – lots may not be combined.
Each lot must pass all the requirements of the test to allow a shelf life claim for the stated interval.
NOTE It is strongly recommended that additional gloves be conditioned as spares in case there is a need for any retesting or
in case additional time points are required.
A.3 Confirmation of shelf life claim
Upon completion of A.2, the shelf life claim shall be up to that period, not to exceed five years, for which the gloves
have complied with the requirements of this European Standard.

9

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SIST EN 455-4:2009
Posebna objava SIST z dovoljenjem CEN, CENELEC, ISO in IEC: Za potrebe zagotavljanja brezplačnega dostopa do vsebin standardov v času epidemije COVID-19.
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EN 455-4:2009 (E)
Annex B
(informative)

...