CEN - European Committee for Standardization

This document specifies the methods used for the chemical analyses and the determination of physical properties of calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime used to treat water for human consumption.
This document specifies the reference methods and, in certain cases, an alternative method which can be considered to be equivalent.
Any other methods may be used provided they are calibrated, either against the reference methods or against internationally accepted reference materials, in order to demonstrate their equivalence.

This document defines a standard for secure and efficient data exchange protocols and data formats to be used for the digital product passport. Data exchange protocols establish the rules and procedures that systems follow when communicating and exchanging information. Data formats define the structure and presentation of that information so it can be understood and processed correctly by the involved systems. Together, protocols and formats ensure that data can be exchanged in a manner that is secure, interoperable, reliable, and compatible across various platforms and sectors.
This will guarantee that data are human and machine-readable, structured, searchable, and transferable through an open, interoperable network without vendor lock-in.
a)   Secure communication:
This document defines protocols that ensure secure and authenticated data exchange between systems, ensuring that data are protected against unauthorised access and, when necessary, only authorized entities can access the information.
b)   Interoperability for data exchange:
The protocols and data formats defined in this document support easy integration with existing data exchange systems, ensure compatibility of protocols and formats across various sectors and supporting a wide range of applications and use cases.
c)   Ease of use and integration:
Ensure that the identified protocols and formats can be implemented easily, especially for mobile devices, and are user-friendly in order to facilitate widespread adoption.
d)   Data integrity:
The protocols and data formats defined in this document ensure the integrity of information linked to physical objects and electronic data throughout the entire value chain, extending to the product's or asset's end-of-life.
e)   Documentation and discoverability:
The protocols and formats are available to individuals without specialized knowledge, enabling broader adoption across sectors.
In order to promote interoperability, reduce costs for businesses, and align with existing European regulations and initiatives, this document considers the data exchange protocols and data formats already in use in other legislations. Relevant existing standards are integrated into the development process to ensure consistency and coherence with industry practices and regulatory frameworks.

This document specifies requirements and the minimum actions performed by an evaluator in order to conduct an evaluation using the criteria and evaluation evidence defined in the ISO/IEC 15408 series evaluation.

This document specifies a procedure for determining whether a perceptible sensory difference or similarity exists between samples of two products. The method is a forced-choice procedure. The method is applicable whether a difference exists in a single sensory attribute or in several attributes.
The method is statistically less efficient than the triangle test (described in ISO 4120) but is easier to perform by the assessors.
The method is applicable even when the nature of the difference is unknown (i.e. it determines neither the size nor the direction of difference between samples, nor is there any indication of the attribute(s) responsible for the difference). The method is applicable only if the products are fairly homogeneous.
The method is effective for:
determining that either:
a perceptible difference results (duo-trio testing for difference); or
a meaningful perceptible difference does not result (duo-trio testing for similarity) when, for example, a change is made in ingredients, processing, packaging, handling or storage;
selecting, training and monitoring assessors.
Two forms of the method are described:
the constant-reference technique, used when one product is familiar to the assessors (e.g. a sample from regular production);
the balanced-reference technique, used when one product is not more familiar than the other.

This document specifies a range of fineness of precious metal alloys recommended for use in the field of jewellery.
NOTE            There is a possibility that national legal requirements for the designation, marking and stamping of finished articles exist in the respective countries.

This document gives guidance on auditing management systems, including the principles of auditing, managing an audit programme and conducting management system audits, as well as guidance on the evaluation of competence of individuals involved in the audit process. These individuals include those managing the audit programme, auditors and audit teams.
It is applicable to all organizations that need to plan and conduct audits of management systems or manage an audit programme.
The application of this document to other types of audits is possible, provided that special consideration is given to the specific competence needed and the objectives to be achieved.

This document specifies requirements and a standardized framework for specifying objective, repeatable and reproducible evaluation methods and evaluation activities.
This document does not specify how to evaluate, adopt, or maintain evaluation methods and evaluation activities. These aspects are a matter for those originating the evaluation methods and evaluation activities in their particular area of interest.

This document specifies a method for exposing plastics to concentrated solar radiation using reflecting concentrators to accelerate the weathering processes. The purpose is to assess property changes produced after specified stages of such exposures. The reflecting concentrators used in these exposures are sometimes referred to as “Fresnel reflectors” because, in cross-section, the array of mirrors used to concentrate the solar radiation resembles the cross-section of a Fresnel lens.
General guidance concerning the scope of the ISO 877 series is given in ISO 877-1.
NOTE            Additional information about solar concentrating exposures, including a partial list of standards in which they are specified, is given in the Bibliography.

This document defines the principles and specifies the requirements and guidelines for unique product identifiers, unique economic operator identifiers, and unique facility identifiers used in digital product passports. It covers the following areas:
a)   global uniqueness;
b)   persistence;
c)   syntax;
d)   granularity;
e)   interoperability;
f)   openness.
This document accommodates unique product identifiers at three granularity levels of specificity: model, batch, or individual item, to support various operational needs.
This document describes identification (ID) schemes that use issuing agencies, self-issuing systems, or a combination of both.

This document defines terms and specifies requirements and test methods for wood veneer floor coverings for internal use.
This document is not applicable to multilayer parquets according to EN 13489 with a top layer thickness  2,5 mm and to modular mechanical locked floor covering (MMF) panels with wear resistant top layer according EN 16511.

The scope of this document includes:
-   the semantic description of a product, including its properties where relevant and the semantic aspects to represent the product lifecycle;
-   a common information model allowing for the implementation of data dictionary systems;
-   metadata models and formats to be used in exchange and representation, allowing for the integration of dictionaries;
-   rules on how to systematically use such metadata models when developing product group specific data models and dictionaries;
-   technical and organizational interoperability.
This document follows the approach of standard interoperability layers and proposes the following aspects in this regard.

This document specifies the security assurance requirements of the ISO/IEC 15408 series. It includes the individual assurance components from which the evaluation assurance levels and other packages contained in ISO/IEC 15408-5 are composed, and the criteria for evaluation of Protection Profiles (PPs), PP-Configurations, PP-Modules and Security Targets (STs).

This document specifies requirements for data storage, archiving, and data persistence of digital product passports, all based on a decentralized approach. The archiving functionality securely stores historical passport data, preserving a comprehensive record of past information. Persistence ensures that data included in the digital product passport remains available even when the economic operator creating the digital product passport is no longer active.
This document also specifies requirements for the replication between economic operators and back-up operators as well as rules for data lifetime definition.

This document aims to standardize the specifications for the API of the digital product passport (DPP) as mandated by the ESPR of the European Commission. The purpose of this API is to facilitate the searchability of DPPs, as well as to provide the necessary means for interactions throughout the lifecycle of a product's DPP.

Shall be according to EN 15502-2-1:2022+A1:2023, Clause 1 with the following modifications:
Replace:
“This document covers gas-fired central heating boilers from the types C1 up to C(11) and the types B2, B3 and B5:”
By:
“This document covers gas-fired central heating boilers from the types C1, C3 up to C9 and the types B2, B3 and B5 :”
b) is replaced by:
b) that use combustible gases of gas group 4Y at the nominal pressure of 20 mbar;
Appliance category   Pn   Pmin   Pmax
4th family   20   17   25
k) is not applicable.
Add at the end of the list, after k), following:
l) which are fully premixed appliances equipped with a Pneumatic Gas/Air Ratio controller (PGAR) or an Adaptive Combustion Control Function (ACCF) that are intended to be connected to hydrogen gas grids where the quality of the distributed hydrogen gas is likely expected to stay within a Wobbe index range of 42 to 46 MJ/m3.
Replace in the list following
“This document does not cover all the requirements for:”
ab), ag), ah) and al) by:
ab) appliances that are intended to be connected to gas grids where the quality of the distributed hydrogen gas is likely to vary outside the Wobbe index range of 42 to 46 MJ/m3;
ag) C(10) boilers;
ah) C(11) boilers;
al) Partially premixed appliances equipped with an adaptive combustion control function (ACCF).
and add an) and ao);
an) The conversion from natural gas to hydrogen.
ao) The risk of aeration of the gas supply to the appliance.

This document establishes the general concepts and principles of information technology (IT) security evaluation. It specifies the general model of evaluation given in this document, which in its entirety is intended to be used as the basis for evaluation of security properties of IT products.
This document provides an overview of all parts of the ISO/IEC 15408 series. It describes the various parts of the ISO/IEC 15408 series i.e.
defines the terms and abbreviations used in all parts of the series; establishes the core concept of a Target of Evaluation (TOE);
describes the evaluation context; and
describes the audience to which the evaluation criteria is addressed.
Additionally, this document introduces the basic security concepts necessary for the evaluation of IT products.

This document specifies the characteristics of corklinoleum, supplied in roll form.
To encourage the consumer to make an informed choice, this document includes a classification system based on intensity of use, which shows where resilient floor coverings should give satisfactory service (see EN ISO 10874). It also includes requirements for marking.
The term 'linoleum' is frequently incorrectly applied to a range of floor coverings, often to those based on polyvinyl chloride or rubber. This document does not apply to such.

This document gives guidelines to select the test methods to assess the performance of leather for automotive. This document also specifies the sampling and conditioning procedures of specimens.
NOTE Regulations on chemical substances in consumer goods might differ from country to country requiring
for any given market a special attention to restricted substances.

This document specifies safety requirements for spreaders used with cranes designed for the purpose of handling freight containers, e.g. those based on ISO 668:2020. The connection between the spreader and the container is by the use of twistlocks that engage into the container’s upper corner castings.
This document deals with all significant hazards, hazardous situations or hazardous events relevant to container handling spreaders, when it is used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer.
The spreader is interfaced to the crane’s control and safety system.
This document does not cover the following types of spreaders:
-   hand operated spreaders (without external power supply);
-   bottom lift grapple spreaders used for swap bodies and road trailers.
This document does not deal with the lifting of persons.
This document is not applicable to container handling spreaders manufactured before the date of its publication.

This document specifies requirements for data carriers used in a digital product passport system. This covers: symbology characteristics, format, error correction codes, encoding methods, printing and production quality, and durability.
This document also specifies requirements on graphical or other indicators for easy recognition of DPP data carriers and the indication on the data carrier placement, machine readability, quality checking, links between physical product and digital representation.
The following aspects are out of scope: architecture and use cases, secure elements and any other cryptographic security features.

This document establishes the fundamental concepts and principles of quality management which are universally applicable to the following:
organizations seeking sustained success through the implementation of a quality management system (QMS);
customers seeking confidence in an organization’s ability to consistently provide products and services conforming to their requirements;
organizations seeking confidence in their supply chain that product and service requirements will be met;
organizations and interested parties seeking to improve communication through a common understanding of the vocabulary used in quality management;
organizations performing conformity assessments against the requirements of ISO 9001;
providers of training, assessment or advice in quality management;
developers of related standards.
This document defines terms that apply to all quality management documents and QMS standards developed by ISO/TC 176.
This document is applicable to all organizations, regardless of size, complexity or business model.

This document specifies requirements for the required structure and content of security functional components for use during a security evaluation. It includes a catalogue of functional components that meet the common security functionality requirements of many IT products.

This document specifies a method for the calibration of reference blocks to use for the indirect verification of testing machines for the instrumented indentation test as specified in ISO 14577-2.
Reference materials, where it is necessary to prepare a surface before the test in a manner that removes surface layers are excluded from this standard.

This document specifies a normalized railway noise spectrum for the evaluation and assessment of the acoustic performance of devices designed to reduce airborne railway noise near railways.
All noise reducing devices different from noise barriers and related devices acting on airborne sound propagation, e.g. devices for attenuation of ground borne vibration and on board devices are outside of the scope of this document.

This document specifies the minimum requirements for general safety and structural safety which include strength, reliability and stability of all types of outdoor seating for camping use, for domestic use and for contract use, for adults, without regard to materials, design or manufacturing processes.
It does not apply to street furniture.
It does not include requirements for removable upholstery, including the cover and filling.
It does not include requirements for the durability of castors/wheels and height adjustment mechanisms.
It does not include requirements for electrical safety.
It does not include requirements for the resistance to ageing and degradation caused by light, temperature and moisture.
The test requirements contained within this document are based on use by persons weighing up to 110 kg.

This document specifies requirements for the general safety and structural safety which include strength, reliability and stability for outdoor tables for camping use, for domestic use and for contract use, used by adults, including those with glass in their construction.
It does not apply to street furniture.
It does not apply to office tables, worktables, desks and laboratory worktops for educational institutions for which other EN standards exist.
With exception of the stability tests, this document does not provide assessment of the suitability of any storage features included in outdoor tables for which other EN standards can be applied.
It does not include requirements for electrical safety.
It does not include requirements for the resistance to ageing, degradation.

This document specifies a method for the measurement of flame spread times of vertically oriented textile fabrics and industrial products in the form of single or multi-component textile fabrics (coated, quilted, multilayered, sandwich combinations, and similar combinations) when subjected to a small, defined flame.

This document specifies the requirements relating to:
Steel X5CrNiCu17-4 (1.4542)
Air melted
Solution treated and precipitation treated
Bars
a or D ≤ 200 mm
Rm ≥ 930 MPa
for aerospace applications.
W.nr: 1.4542.
ASD-STAN: FE-PM3801.

This document specifies requirements for implantation test methods for preclinical assessment of the local effects after implantation of medical devices or materials intended for use in medical devices. This document is applicable to the evaluation of local tissue responses from medical devices that are intended to be used where skin or mucosal tissue is breached, when required.
This document is applicable to medical device or materials that require implantation evaluation and can be solid or non-solid (such as porous materials, liquids, gels, pastes, powders, and particulates), absorbable, degradable, non- absorbable, or can be tissue-engineered medical products (TEMPs).
These implantation tests are not intended to evaluate or determine the performance of the test sample in terms of mechanical loading or functional performance. This document also does not provide guidance on methods and study design to satisfy requirements for systemic toxicity, carcinogenicity, teratogenicity or mutagenicity. However, the study designs can be modified to also assess other biological effects.

This document is applicable to protective ventilation systems to provide breathing air to operator's stations on earth-moving machinery used in contaminated areas. Its purpose is to limit the exposure of the operator (driver) to hazardous agents when earth-moving machinery is used in contaminated areas.
This document describes requirements, test procedures and information to be provided by the manufacturer of protective ventilation systems to provide breathing air to operator's stations on earthmoving machinery used in contaminated areas.
This document gives requirements additional to the common safety requirements of EN 474-1:2022 "Earthmoving machinery - Safety - Part 1: General requirements" and to the machine specific parts of the EN 474:2022 series.
This document does not repeat the requirements from the EN 474:2022 series but adds or replaces the requirements as applicable for Earth-moving machinery.
This document does not cover:
-   the safety requirements to be used for any specific application;
-   the choice of the system for a specific application site;
-   the filter performance or the relevant filtration class for any particular application;
-   the choice of type of filter for a specific application;
-   the cab performance requirement when in-use;
-   the filter durability when in-use.
This document is not applicable to protective ventilation systems which are manufactured before the date of its publication as an EN.
For the list of significant hazards, see informative Annex A.

This document defines the purpose, governance and functional requirements of the eInvoicing Registry for CIUS and Extension Specifications. This document is not to be confused with other business / project focused Technical Specifications. It follows CEN rules and will be published as a CEN document with normative statements.
A key part of this document is to provide a functional specification, which will describe the various functions of eInvoice Registry Services.
The Registry is intended to serve as a structured, transparent and publicly accessible repository that facilitates the discovery, registration and management of eInvoicing Specifications that either restrict the conditional elements of the Core Invoice Model and/or extend it in conformance with Part 5 Extension Methodology.
The scope of this document includes:
- Definition of Registry Services - the structure and capabilities of the Registry including the types of artefacts it stores or references, e.g. CIUS, Extension Specifications, Validation Artefacts and Services, and Code Lists;
- Governance Model - the roles and responsibilities of entities involved in managing and maintaining the Registry;
- Submission and Verification Processes - how Specifications are submitted, reviewed and verified for inclusion in the Registry;
- Functional Specification - the required functionality, processes and procedures that enable the Registry to operate efficiently.

This document specifies a method for the determination of the puncture resistance by measuring the force required to push a flat-ended plunger through geosynthetics.
The test is normally carried out on dry specimens conditioned in the specified atmosphere.
The test is applicable to most types of geosynthetic products, but does not apply to products with apertures greater than 10 mm.

This document specifies the requirements relating to:
Steel X5CrNiCu17-4 (1.4542)
Air melted
Solution treated and precipitation treated
Bars
a or D ≤ 200 mm
Rm ≥ 1 310 MPa
for aerospace applications.
W.nr: 1.4542.
ASD-STAN: FE-PM3801.

This document encompasses the determination of the fatty acid profile in algae and algae products, thereby including micro- and macroalgae, according to the definitions adopted by CEN. This determination enables that all fatty acids present at a significant level (> 1 % of the total fatty acids) in the algal matrix are quantified in an accurate and reproducible way. The concentration of each fatty acid will be available in relative (in %) and, by means of an appropriate internal standard, absolute (mg/g dw) terms. Moreover, the method described in this standard ensures a practical and safe technical approach, whose protocol details and all related know-how will be easily and economically transferrable to all the sector stakeholders. This document ensures this objective by a comprehensive and fully detailed description of all technical steps from the sample itself (including its state and form) to the gas chromatographic technique and the calculation of the fatty acid content. The wording avoids any risk of ambiguity or wrong interpretation. Finally, this methodological standard will be informed by other equivalent standards applied to other matrices and will take into account other standards concerning specific treatment or extractive procedure of the sample prior to the fatty acid analysis itself.

This document specifies the requirements for seal-less rotodynamic pumps that are driven with permanent magnet coupling (magnet drive pumps) or with canned motor, and which are mainly used in chemical processes, water treatment and petrochemical industries. Their use can be dictated by space, noise, environment or safety regulations.
Seal-less pumps are pumps where an inner rotor is completely contained in a pressure vessel holding the pumped fluid. The pressure vessel or primary containment device is sealed by static seals such as gaskets or O-rings.
Pumps normally conform to recognized standard specifications (e.g. ISO 5199, explosion protection, electromagnetic compatibility), except where special requirements are specified herein.
This document includes design features concerned with installation, maintenance and operational safety of the pumps, and defines those items to be agreed upon between the purchaser and manufacturer/supplier.
Where conformity to this document has been requested and calls for a specific design feature, alternative designs can be offered providing that they satisfy the intent of this document and they are described in detail. Pumps which do not conform with all requirements of this document can also be offered providing that the deviations are fully identified and described.
Whenever documents include contradictory requirements, they are applied in the following sequence of priority:
purchase order (or inquiry, if no order placed), see Annexes C and D;
data sheet (see Annex A) or technical sheet or specification;
this document;
other standards.

This document specifies requirements for classification of covered electrodes and deposited metal in the as-welded condition and in the post-weld heat-treated condition for manual metal arc welding of high-strength steels with a minimum yield strength greater than 500 MPa or a minimum tensile strength greater than 570 MPa.
This document is a combined specification providing a classification utilizing a system based on the yield strength and an average impact energy of 47 J of the all-weld metal, or utilizing a system based on the tensile strength and an average impact energy of 27 J of the all-weld metal.
Clauses, subclauses and tables which carry the suffix “System A” are applicable only to covered electrodes classified under the system based on the yield strength and an average impact energy of 47 J of the all-weld metal given in this document.
Clauses, subclauses and tables which carry the suffix “System B” are applicable only to covered electrodes classified under the system based on the tensile strength and an average impact energy of 27 J of the all-weld metal given in this document.
Subclauses and tables which do not have either the suffix “System A” or the suffix “System B” are applicable to all covered electrodes classified under this document.

The CEN/TS 18212 series specifies a generic framework for the establishment of requirements and their evaluation methodology for biometric products. The requirements depend on the biometric mode considered and are adapted to each scenario, through the definition of a variety of application profiles.
The CEN/TS 18212 series specifies the evaluation methodology, the individual tests and the application profiles (with their particular requirements).
This document specifies:
—   The different kind of evaluations to be performed.
—   The terms used during the description of the tests to be applied.
—   The parameters used, whose values are defined by each application profile, for each of the individual tests.
—   Test data used, and considerations dealing with personal data protection.
—   How to perform technology evaluations.
—   Execution flow for functionality scenario evaluations.
—   Execution flow for attack resistance evaluations.
NOTE 1   Future parts of the CEN/TS series are planned to address the specifics of each biometric mode.
For each of these modalities, this document specifies application-independent tests, as well as a set of application profiles, that detail the applicable tests, the evaluation parameters and the passing criteria.
The CEN/TS 18212 series can be taken by any certification body and/or sector, to define and evaluate the requirements for their biometric products within their selected applications.
NOTE 2   National regulations and requirements can apply.
NOTE 3   Regarding biometrics for public sector applications, see also BSI TR-03121 [8] which can apply.
NOTE 4   For an overview of sectors addressed in the Cybersecurity Act, see Regulation (EU) 2019/881 [2].

This document specifies allowable limits (AL) for residual ethylene oxide (EO) and ethylene chlorohydrin (ECH) in EO-sterilized medical devices, procedures for the measurement of EO and ECH, and methods for determining conformity so that devices can be released. Additional background, including guidance and a flowchart showing how this document is applied, are also included in Annexes A, B, C, D, E, F, G, H, I, J and K.
EO-sterilized devices or components that have neither direct nor indirect body or user contact (e.g. in vitro diagnostic devices) are out of scope of this document. This document does not apply to devices that have been demonstrated to not absorb or retain EO or its degradation product ECH, such as medical devices made exclusively of metal alloys and glass, see Clause C.5[228].
NOTE            This document does not specify limits for ethylene glycol (EG). No device limits are specified for EG because the risk assessment in Annex F indicates that calculated allowable levels are higher than those likely to occur in a medical device.

This part of EN 16432 series specifies how to integrate the particular aspects of ballastless track systems for attenuation of vibration into the system and subsystem design and component configuration according to EN 16432-2:2017.
The general system and subsystem design requirements are assigned from EN 16432-1:2017.
Additional noise and vibration requirements can be project specific and are not provided by this document. Acoustic requirements are considered as input for the track design from the acoustic design. The acoustic design and the track design affect each other and may require an iterative overall design process.
The range of applicability covers all kind of rail systems including Urban Rail systems.

This document specifies requirements to the safe handling and the physical, chemical and biological testing of plastic containers for parenterals.
This document is applicable to plastic containers for parenterals having one or more chambers and having a total nominal capacity in the range of 50 ml to 5 000 ml such as film bags or blow-moulded plastic bottles for direct administration of infusion (injection) solutions.
NOTE 1        In some countries, national or regional pharmacopoeias or other government regulations are legally binding, and these requirements take precedence over this document.
NOTE 2        Annex E provides explanations about the history of the development of the standard and summarises the different arguments discussed within ISO/TC 76 during the elaboration of the document.
NOTE 3        Annex F provides recommendations regarding sustainability.
NOTE 4        Annex G provides information on attributive and variable testing.

This document specifies a method for the determination of selected polybrominated diphenylethers (PBDE) (see Figure 1 and Table 1) in sediment, suspended particulate matter and biota using gas chromatography coupled with tandem mass spectrometry (GC-MS/MS) or with high resolution mass spectrometry (GC-HRMS) in the electron impact (EI), negative ion chemical ionization (NCI) or atmospheric pressure ionization (APCI) mode.
The method is applicable to sediment and suspended particulate matter samples with limits of quantification of 0,2 µg/kg dry mass (dm) for brominated diphenylether (BDE) BDE-28 to BDE-183, of 2 µg/kg dry mass (dm) for BDE‑209.
The method is applicable as well with lower limits of quantification (LOQ), if specific clean-up methods, described in Clause 10, Table 3, method 1 and method 2 in combination with measurement methods GC-MS/MS or GC-HRMS after electron impact ionization (El) or negative ion chemical ionization (NCI) for BDE-209 are used. Depending on the analytical capability of the instrument, limits of quantification down to 0,003 µg/kg dm for BDE-28 to BDE-154 and 0,02 µg/kg dm for BDE-183 and 1 µg/kg dm for BDE-209 and lower are possible.
The method is applicable to biota samples with limits of quantification down to 0,000 2 µg/kg fresh mass (fm) (BDE-28 to BDE-154) and 0,03 μg/kg fresh mass (fm) (BDE-183), if specific clean-up methods, described in Table 4 in combination with measurement methods GC-MS/MS or GC-HRMS after electron impact ionization (El) are used.
Performance data are listed in Annex E.

This document specifies a method for the measurement of ease of ignition of vertically oriented textile fabrics and industrial products in the form of single or multi-component textile fabrics (coated, quilted, multilayered, sandwich constructions, and similar combinations), when subjected to a small, defined flame.

This document specifies requirements and guidelines for assessing the chemical airborne cleanliness of equipment and materials which are foreseen to be used in cleanrooms and associated controlled environments that are linked to the ISO standard for air cleanliness by chemical concentration (see ISO 14644-8).
This document does not apply to the following:
health and safety requirements;
compatibility with cleaning agents and techniques;
cleanability;
biocontamination;
specific requirements of equipment and materials for processes and products;
design details of equipment.

This document defines the terms used in acoustic emission testing and forms a common basis for standards and general use.