Status
Not Published
Public Enquiry End Date
30-Dec-2025
Technical Committee
VAZ - Healthcare
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
04-Nov-2025
Due Date
24-Mar-2026
Completion Date
05-Jan-2026

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SIST EN ISO 13408-2:2018/oprA1:2025

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SIST EN ISO 13408-2:2018/oprA1:2025 is the SIST draft amendment to ISO 13408-2:2018, published by SIST for aseptic processing of health care products. It updates the part of the series that deals with sterilizing filtration, so users can apply current requirements for filter selection, risk management, integrity testing, and control of the process used to produce a sterile filtrate.

What does SIST EN ISO 13408-2:2018/oprA1:2025 specify?

SIST EN ISO 13408-2:2018/oprA1:2025 specifies amendments to the requirements for sterilizing filtration in aseptic processing of health care products. The document is organized as clause-by-clause changes to the base standard, plus informative EU regulatory annexes.

AnnexWhat it covers
ZARelationship with Regulation (EU) 2017/745 and the clauses used to support presumption of conformity
ZBRelationship with Regulation (EU) 2017/746 and the clauses used to support presumption of conformity

The amendment also updates the normative references, definitions, bibliography, and several internal cross-references. In practice, that means readers need to check both the amended clauses and the referenced Part 1 standard when using this part for validation or routine control.

What are the key requirements of SIST EN ISO 13408-2:2018/oprA1:2025?

The most important changes strengthen how sterilizing filtration is selected, justified, controlled, and verified.

  • Clause 4.1 requires sterilizing filtration activities to be run under quality risk management (QRM) principles, with controlled documentation, resources, supplier input, lifecycle decisions, process monitoring, traceability, and non-conforming product control. In practice, a company needs a managed system, not only a validated filter.
  • Clause 4.2 requires documented operator training for filtration procedures, failure modes, integrity testing, failure investigation, filter assembly, installation, cleaning, and sterilization. That matters because many filtration failures are procedural, not just technical.
  • Clause 4.3 requires defined purchasing procedures and a written agreement so the filter manufacturer notifies the filter user about manufacturing changes that may affect fluid and process parameters. This protects consistency across the supply chain.
  • Clause 4.4 requires calibration of all equipment, including test instrumentation. That means integrity and process data must be trustworthy before they can support release or review.
  • Clause 5.2.2 adds the effect of the fluid on filter membrane characteristics, including possible changes in integrity test values between pre- and post-testing. This is important when fluid properties can shift bubble point or similar measurements.
  • Clause 6.2.2 requires a scientifically based risk assessment when selecting filters and filtration equipment, including a check that the process is feasible and contamination risks are reduced. The note links this to pre-use-post-sterilization integrity test (PUPSIT) decisions.
  • Clause 6.4.5 links the process to maintaining filtrate sterility and to integrity testing of the sterilizing filter in its housing after sterilization and before filtration when PUPSIT is indicated. That means the pre-use test decision must be justified.
  • Clause 7.1.2 emphasizes control of bioburden below the validated retention performance and understanding fluid chemistry so the filter is not masked by occlusion, swelling, or binding. This is central to avoiding false confidence in filter performance.
  • Clause 9.2.1.5 requires the bacterial challenge test to use the fluid to be filtered when possible, with viability checked over the worst-case test time; if the fluid is inhibitory, a simulation fluid or adjusted conditions are used. That keeps validation tied to the real process.

What terms does SIST EN ISO 13408-2:2018/oprA1:2025 define?

  • Filter integrity test - A non-destructive physical test that can be correlated with the bacterial retention capability of a filter assembly.
  • Fluid - A substance that flows under applied shear force, including liquid, gas, vapour, or plasma.
  • Sterilizing filtration - Removal of viable microorganisms from fluids by passing the fluid through a filter under specified process conditions to produce a sterile filtrate.
  • Sterile filtrate - The output intended to remain sterile after passage through the sterilizing filter.
  • Quality risk management (QRM) - The risk-based approach used here to manage microbiological contamination and material effects risks to product quality.
  • Pre-use-post-sterilization integrity test (PUPSIT) - The integrity test used after sterilization and before fluid filtration when it is indicated.
  • Filter assembly - The filter and its housing as a functional unit for sterilizing filtration.

Who uses SIST EN ISO 13408-2:2018/oprA1:2025?

SIST EN ISO 13408-2:2018/oprA1:2025 is used by organizations that design, validate, operate, or audit aseptic processing lines with sterilizing filtration. Typical users include:

  • manufacturers of health care products and medical devices
  • filter users and filter manufacturers
  • validation, process engineering, and manufacturing teams
  • microbiology and quality control personnel
  • quality managers and regulatory affairs staff
  • buyers and suppliers of filtration equipment and filters

These users apply it to filter selection, supplier control, integrity testing, bacterial challenge validation, and routine process review.

What changed in SIST EN ISO 13408-2:2018/oprA1:2025 from the previous edition?

SIST EN ISO 13408-2:2018/oprA1:2025 amends ISO 13408-2:2018 by updating the following points:

  • Clause 2 updates the normative references, including ISO 11139 and ISO 13408-1:2023, and adds ISO 11139:2018/Amd 1:2024.
  • Clause 3 revises terms and definitions and aligns the order of entries.
  • Clause 4 is rewritten to expand quality system, training, purchasing, traceability, and calibration expectations.
  • Clause 5.2.2 adds the effect of the fluid on the filter membrane and integrity test values.
  • Clause 6 updates risk-management language and adds explicit PUPSIT-related wording.
  • Clause 7.1.2 adds notes on bioburden control and microscopic filter flaw masking.
  • Clause 8.4.2 links the decision to omit the pre-use test to a documented risk assessment.
  • Clause 9.2.1.5 updates the bacterial challenge test fluid and simulation conditions.
  • Clauses 10.4, 11.4, 12.2, 12.3.1, and 12.3.3 align records, maintenance, and review references with ISO 13408-1:2023.

Which standards are used with SIST EN ISO 13408-2:2018/oprA1:2025?

  • ISO 11139:2018 and ISO 11139:2018/Amd 1:2024 - vocabulary for sterilization and related equipment and process standards.
  • ISO 13408-1:2023 - general requirements for aseptic processing; this amendment points to it repeatedly for shared requirements.
  • ISO 11135, ISO 11137-1, and ISO 13408-5 - listed in Annex ZA.2 as related standards in the conformity framework.
  • ISO 13485 - cited in the bibliography and listed in Annex ZA.2 for regulatory-context alignment.
  • ISO 17665-1 - cited in the bibliography and listed in Annex ZA.2 as another related sterilization standard.

What does the SIST EN ISO 13408-2:2018/oprA1:2025 document contain?

This amendment contains targeted edits to the base part of the standard rather than a full rewrite. It updates clause text, notes, cross-references, and bibliographic entries, and it adds or refreshes links to EU medical device and IVD regulatory annexes. The annexes provide mapping tables for conformity purposes, while the bibliography points to supporting standards and technical papers on filter masking, integrity testing, and fluid effects on test values.

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Effective Date
31-Jul-2024

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Frequently Asked Questions

SIST EN ISO 13408-2:2018/oprA1:2025 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Aseptic processing of health care products - Part 2: Sterilizing filtration - Amendment 1 (ISO 13408-2:2018/DAmd1:2025)". This standard covers: Aseptic processing of health care products - Part 2: Sterilizing filtration - Amendment 1 (ISO 13408-2:2018/DAmd1:2025)

Aseptic processing of health care products - Part 2: Sterilizing filtration - Amendment 1 (ISO 13408-2:2018/DAmd1:2025)

SIST EN ISO 13408-2:2018/oprA1:2025 is classified under the following ICS (International Classification for Standards) categories: 11.080.01 - Sterilization and disinfection in general. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN ISO 13408-2:2018/oprA1:2025 has the following relationships with other standards: It is inter standard links to SIST EN ISO 13408-2:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN ISO 13408-2:2018/oprA1:2025 is associated with the following European legislation: EU Directives/Regulations: 2017/745, 2017/746; Standardization Mandates: M/575, M/575 AMD 2. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

SIST EN ISO 13408-2:2018/oprA1:2025 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-december-2025
Aseptična proizvodnja izdelkov za zdravstveno nego - 2. del: Sterilizacija s
filtracijo - Dopolnilo A1 (ISO 13408-2:2018/DAmd1:2025)
Aseptic processing of health care products - Part 2: Sterilizing filtration - Amendment 1
(ISO 13408-2:2018/DAmd1:2025)
Aseptische Herstellung von Produkten für die Gesundheitsfürsorge – Teil 2:
Sterilfiltration – Änderung 1 (ISO 13408 2:2018/DAmd 1:2025)
Traitement aseptique des produits de santé - Partie 2: Filtration stérilisante -
Amendement 1 (ISO 13408-2:2018/DAmd 1:2025)
Ta slovenski standard je istoveten z: EN ISO 13408-2:2018/prA1:2025
ICS:
11.080.01 Sterilizacija in dezinfekcija na Sterilization and disinfection
splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
Amendment
ISO 13408-2:2018/
DAM 1
ISO/TC 198
Aseptic processing of health care
Secretariat: ANSI
products —
Voting begins on:
Part 2:
2025-10-24
Sterilizing filtration
Voting terminates on:
2026-01-16
AMENDMENT 1
Traitement aseptique des produits de santé —
Partie 2: Filtration stérilisante
AMENDEMENT 1
ICS: 11.080.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO 13408-2:2018/DAM 1:2025(en)

DRAFT
ISO 13408-2:2018/DAM 1:2025(en)
Amendment
ISO 13408-2:2018/
DAM 1
ISO/TC 198
Aseptic processing of health care
Secretariat: ANSI
products —
Voting begins on:
Part 2:
Sterilizing filtration
Voting terminates on:
AMENDMENT 1
Traitement aseptique des produits de santé —
Partie 2: Filtration stérilisante
AMENDEMENT 1
ICS: 11.080.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
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be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
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or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
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Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO 13408-2:2018/DAM 1:2025(en)

ii
ISO 13408-2:2018/DAM 1:2025(en)
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 198, Sterilization of health care products, in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 204,
Sterilization of medical devices, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
A list of all parts in the ISO 13408 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iii
ISO 13408-2:2018/DAM 1:2025(en)
Aseptic processing of health care products —
Part 2:
Sterilizing filtration
AMENDMENT 1
Clause 2, Normative references
1)
Replace the reference and title of “ISO 11139, …” with:
ISO 11139, Sterilization of health care products — Vocabulary of terms used in sterilization and related
equipment and process standards
Add the following reference:
ISO 11139:2018/Amd 1:2024, Sterilization of health care products — Vocabulary of terms used in
sterilization and related equipment and process standards — Amendment 1: Amended and additional terms
and definitions
Delete ISO 13408-1:2008 and ISO 13408-1:2008/Amd. 1 and replace with the following:
ISO 13408-1:2023, Aseptic processing of health care products — Part 1: General requirements

Remove entry for ISO 13485, Medical devices — Quality management systems — Requirements for regulatory
purposes and move to the Bibliography as:
[10] ISO 13485, Medical devices — Quality management systems — Requirements for regulatory purposes

Remove entry for ISO 17665-1, Sterilization of health care products — Moist heat — Part 1: Requirements for
the development, validation and routine control of a sterilization process for medical devices and move to the
Bibliography as:
[11] ISO 17665-1, Sterilization of health care products — Moist heat — Part 1: Requirements for the
development, validation and routine control of a sterilization process for medical devices

Clause 3, Terms and definitions
Replace first sentence with the following:
For the purposes of this document, the terms and definitions given in ISO 13408-1 and the following apply.

3.1
Add source:
[SOURCE: ISO 11139:2018, 3.19]

ISO 13408-2:2018/DAM 1:2025(en)

3.2
Add source:
[SOURCE: ISO 11139:2018, 3.23, modified — Note 1 to entry added.]

3.3
Add source:
[SOURCE: ISO 11139:2018, 3.41]

3.4
Add source:
[SOURCE: ISO 10993-12:2021, 3.7, modified — The wording of the term and definition has been modified.]

3.5
Add source:
[SOURCE: ISO 11139:2018, 3.117]

3.6, 3.7
Switch order of 3.6 and 3.7 to retain alphabetical order of terms and definitions and add Example, Note 1 to
entry and sources to read as follows:
3.6
filter integrity test
non-destructive physical technical operation that can be correlated to the bacterial retention capability of a
filter assembly
[SOURCE: ISO 11139:2018, 3.118]
3.7
fluid
substance that continually deforms (flows) under applied shear force
EXAMPLE Liquid, gas, vapour or plasma.
Note 1 to entry: The filtrate of the fluid subjected to the sterilizing filtration (3.11) process might be the product to
be produced, a part of the formulation, a gas used to provide overpressure or a process gas released into the aseptic
processing area (e.g. gases released from air actuated valves).
[SOURCE: ISO 11139:2018, 3.120, modified — Note 1 to entry added.]

3.8
Add source:
[SOURCE: ISO 11139:2018, 3.152]

ISO 13408-2:2018/DAM 1:2025(en)

3.9
Add source:
[SOURCE: ISO 11139:2018, 3.176, modified — Note 1 to entry added.]

3.10
Add source:
[SOURCE: ISO 11139:2018, 3.196, modified — Note 1 to entry added.]

3.11
Add source for entry 3.11 and change reference 3.6 to 3.7 to read as follows:
3.11
sterilizing filtration
removal of viable microorganisms (3.9) from fluids (3.7) by passage of the fluid through a filter (3.5) under
specified process conditions resulting in a sterile filtrate
[SOURCE: ISO 11139:2018, 3.276]

Clause 4, Quality system elements
Replace the text of Clause 4 with the ISO/TC 198 Common Clause 4 text, with minor modifications, as follows:
4  General
4.1  Sterilising filtration activities are undertaken in accordance with quality risk management (QRM)
principles to manage microbiological contamination and material effects risks to product quality. To
ensure the consistent implementation of the requirements specified in this document, the necessary
processes shall be established, implemented and maintained. Processes of particular importance in
relation to sterilising filtration include, but are not limited to:
— control of documentation, including records,
— assignment of management responsibility,
— provision of adequate resources, including competent human resources and infrastructure,
— control of the product provided by external parties,
— judicious decision-making during product lifecycle, including modernizing and improving sterilising
filtration processes to further reduce risks to product quality,
— establishment of and maintenance of the sterilising filtration process,
— investment in sterilising filtration process understanding and monitoring of process performance,
— identification and traceability of the product throughout the process, and
— control of a non-conforming product including related corrective and preventive actions.

ISO 13408-2:2018/DAM 1:2025(en)
NOTE Quality management is a management function that directs and controls an organisation in rela-
tion to quality. The essential concepts of good manufacturing practice (GMP), quality control and quality
assurance are interconnected within the context of quality management. Their significance in sterilising
filtration of medicines and CBHPs is described in national and regional codes of GMP. For medical devices,
ISO 13485 covers all stages of the product lifecycle in the context of quality management systems for
regulatory purposes. National and/or regional regulatory requirements for the provision of health care
products can require the implementation of a full quality management system and the assessment of that
system by a recognized conformity assessment body.
4.2  Operator training specific to filtration activities shall be implemented and documented for the
following:
a) filtration procedures, modes of failure and needed precautions;
b) integrity test theory and practice;
c) failure investigation procedures and measures taken in case of integrity test deviations;
d) filter assembly procedure (including aseptic technique if required);
e) filter installation, cleaning and sterilization procedures.
4.3  Procedures for purchasing filters and filtration equipment shall be specified.
There shall be a written agreement between the filter user and filter manufacturer that the filter
manufacturer will notify the filter user of any changes in the filter manufacturing conditions with
potential to affect the defined fluid and process parameters.
Procedures for identification and traceability of filters shall be specified.
4.4  A process shall be specified for the calibration of all equipment, including instrumentation for test
purposes, used in meeting the requirements of this document.

5.2.2
Add an additional bullet point as d) and rename the following bullet points accordingly [i.e. d) becomes e), .]:
d) potential for the fluid to alter the characteristics of the filter membrane, for instance, to cause a
[12]
change to the filter integrity test value between pre- and post-testing , e.g. a shift in bubble point
value;
6.2.1
Replace the text with the following:
6.2.1  The following additional requirements to ISO 13408-1:2023, Clauses 5 and 6 concerning risk
management apply.
6.2.2
Modify the introductory paragraph as follows:
6.2.2  A scientifically based risk assessment shall be performed during the selection of filter(s) and
filtration equipment, to confirm feasibility of the sterilizing filtration process and its controls to reduce
the risk of microbiological contamination. The risk assessment shall include, but is not limited to the
following:
ISO 13408-2:2018/DAM 1:2025(en)

6.2.2
Add a NOTE to c) as follows:
NOTE When PUPSIT is a consideration, the risk assessment includes deliberation of the risks and benefits
across the sterilizing filtration process, as well as to the finished product and the patient, for example,
the risk of loss of sterility assurance for finished product via microbiological contamination due to filter
[13],
flaw masking versus the risk of loss of sterility assurance for finished product via microbiological
contamination of the process due to improper or inadequate performance of PUPSIT. See also 4.3, 5.2.2,
6.2.3, 7.1.2 and 8.4.2.
6.4.5
Modify text of b) to address the updated reference to the following:
b) To maintain the sterility of the filtrate (see ISO 13408-1:2023, Clause 7).

6.4.5
Modify g) as follows:
g) To permit integrity testing of the filtration system, i.e. the sterilizing filter in its housing, post
sterilization and prior to fluid filtration where pre-use–post-sterilization integrity test (PUPSIT) is
indicated.
7.1.2, NOTE
Replace with the following:
NOTE 1 The intention is that the pre-sterilizing filtration bioburden is controlled and maintained at a level
substantially below the validated retention performance of the filtration system. A sound knowledge of
the chemistry of the fluid to be filtered is necessary to understand the potential for this fluid to adversely
affect the sterilizing filter with the potential for filter flaw masking e.g. occlusion, swelling or binding of
the membrane. In addition, it is necessary to determine processing conditions that do not pose a risk of
microscopic filter flaw masking and those that could favour such filter flaw masking.
NOTE 2 For microscopic filter flaw masking to occur, filter flaws need to be sufficiently small to not be
detected during pre-sterilization or post-use filter testing, but to then become large enough to allow
passage of microbiological contamination after filter sterilization, and to then become sufficiently small
again to be closed or masked due to the f
...