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This document specifies a method for the quantitative determination of total uronic acids by High Performance Anion Exchange Chromatography coupled with Pulsed Amperometric Detection (HPAEC-PAD) after acid hydrolysis of the samples for algae and algae products. It specifies a method for the determination in one single analysis of mannuronic, glucuronic and guluronic acids in brown seaweed, and mannuronic and guluronic acids in alginate products. The sum of the individual uronic acid values is used for determining the total uronic acid content.

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.

IEC 61300-2-33:2026 evaluates the behaviour of a fibre optic mechanical splice, a fibre management system, a protective housing or a hardened connector after being subjected to a specified number of assembly and disassembly operations.
The test procedures described in this document simulate conditions that the component can encounter during its service lifetime to check the following performance characteristics:
- capability of an optical mechanical splice to be reinstalled after being disassembled;
- capability to reintroduce fibre management systems and protective housings, accessing fibres and optical components and making reconfigurations without disturbing transmission in adjacent fibre circuits;
- sealing performance of the protective housing after frequent opening and closing operations;
- sealing performance of the hardened connector after frequent mating and demating operations.
This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) update of the terms and definitions according to IEC 61753-1:2018 and IEC 61756‑1:2019;
b) update of the test severities according to the new edition of IEC 61753-1:2018;
c) addition of procedure D to verify the sealing performance after frequent mating and demating of a hardened connector.

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 the extraction and determination procedures for the phycobiliproteins C-phycocyanin (C-PC) and the complementary pigment allophycocyanin (APC) from dry samples of species belonging to the genus Arthrospira (Cyanobacteria, Cyanoprokaryota or blue-green algae)(nowadays referred to Limnospira, [1]), and commercially known as Spirulina. This document enables laboratories analysing Arthrospira samples to report accurate C-PC and APC concentrations and yields.

IEC 62683-1:2026 establishes the reference dictionary of the general description of classes of low-voltage switchgear and controlgear and their assemblies based on defined properties. This dictionary is used to facilitate the exchange in electronic format of data describing low voltage switchgear and controlgear, their accessories and their assemblies. This document provides clear and unambiguous definitions of a limited number of properties and classes which are mainly used for presentation, selection and identification of products particularly in electronic catalogues. Each property has an unambiguously defined meaning and name, and where relevant, a defined value list, a defined format, and a defined unit. Manufacturer specific features are not covered. This second edition cancels and replaces the first edition published in 2017. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition for reflecting the content of the IEC CDD 62683DB which has been updated with the change requests C00073, C00074, C00081, C00087, C00089, C00098, C00100, C00107, C00111, C00116, C00119, C00122, C00146, C00148, C00159, C00167, C00174 and C00135:
a) New device class descriptions: ACC304, ACC305, ACC413, ACC417, ACC503, ACC504, ACC505, ACC512, ACC516, ACC536, ACC537, ACC538, ACC540, ACC541, ACC542, ACC543, ACC544, ACC545, ACC546, ACC547, ACC548.
b) New associated properties.
c) New assembly class structure: ACC101, ACC102, ACC103, ACC104, ACC106, ACC110, ACC111, ACC112, ACC113, ACC114, ACC115, ACC116, ACC117, ACC118, ACC119, ACC120, ACC121, ACC123, ACC124, ACC125, ACC126, ACC127, ACC131, ACC132, ACC133, ACC135, ACC141, ACC142, ACC143, ACC144, ACC145, ACC146, ACC147, ACC148, ACC150, ACC151, ACC152, ACC153, ACC154, ACC155, ACC156, ACC157, ACC158, ACC159, ACC160, ACC161, ACC162, ACC163, ACC164, ACC165, ACC166, ACC167, ACC170, ACC171, ACC172, ACC173, ACC174, ACC175.

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.

This document describes the application of Kjeldahl and Dumas methods for the determination of nitrogen content in algae and their relevant products.
The method was initially tested and evaluated on the algae species Nannochloropsis sp. and Palmaria palmata. The study validated this document for both algae species. This method can also be used for other algae species.

This document specifies a test method for the determination of total amount of halogens (including fluorine, chlorine, bromine and iodine) present in textile products by combustion and ion chromatography (C-IC).
This document is applicable to all materials of textile products which are combustible, e.g. fibres, fabrics, plastic components (including coating), wood.

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 the conditions for determining the tensile properties (including tensile modulus, Poisson’s ratio, strength, strain at maximum force and fracture strain) of ceramic matrix composite materials with continuous fibre reinforcement at room temperature. This document applies to all ceramic matrix composites with a continuous fibre reinforcement, including unidirectional (1D), bi-directional (2D), and multi-directional (xD, with x > 2), reinforcement, loaded along a principal axis of reinforcement. NOTE In most cases, ceramic matrix composites to be used at high temperature in air are coated with an antioxidation coating.

This document establishes required practices for the safe use of bridge and gantry cranes. It is intended to be used in conjunction with ISO 12480-1. This document applies to the bridge and gantry cranes as defined in ISO 4306-1 and ISO 4306-5.

This document specifies a method for sampling and handling earthworms from field soils as a prerequisite for using these animals as bioindicators (e.g. to assess the quality of a soil as a habitat for organisms). This document is applicable to all terrestrial biotopes in which earthworms occur. This document does not apply to semi-terrestrial soils (i.e. soils that are partly aquatic, such as bogs, beaches, marshes, stream margins) and it can be difficult to use under extreme climatic or geographical conditions (e.g. in high mountains). Methods for other soil organism groups, such as micro-arthropods and enchytraeids (mesofauna), are covered in other parts of the ISO 23611 series.

This document specifies the determination of aldehydes and ketones content in polyether polyols and polymer polyols by high performance liquid chromatography (HPLC). This document is applicable to the determination of formaldehyde (HCHO), acetaldehyde (CH3CHO), acrolein (CH2=CHCHO) and acetone (CH3COCH3) in polyether polyols and polymer polyols.

This document establishes a framework for the implementation of a sharing economy. It specifies requirements for and gives guidance on the operational economic, social, environmental, legal and other considerations and factors associated with implementation of sharing economy applications and approaches in sharing economy contexts. This document is applicable to all actors participating in the sharing economy ecosystem, including platform operators, providers, users and other stakeholders. This document is applicable to all types and sizes of organization (e.g. commercial enterprises, government agencies, not-for-profit organizations).

IEC 61753-021-03:2026 defines minimum initial test and measurement requirements and severities which single-mode fibre optic connectors terminated as a pigtail or a patchcord satisfy in order to be categorized as meeting the IEC standard category OP (outdoor protected environment), as defined in IEC 61753-1. If tests are performed on the connectors terminated as pigtails or patchcords for category OPHD, OP+ or OP+HD and the product passes these tests, the product will be automatically qualified or categorized as meeting the IEC standard for category OP. If tests are performed on the connectors terminated as pigtails or patchcords for category OP, and the product passes these tests, the product will be automatically qualified or categorized as meeting the IEC standard for category C or CHD. This first edition cancels and replaces the first edition of IEC 61753-021-3 published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) update of environmental categories (from U to OP), tests and their severities in accordance with IEC 61753‑1; b) changes in the terms and definitions of the different types of test samples (pigtail test samples and patchcord test samples) used in the various tests to avoid confusion; c) update of fibre naming conventions in accordance with IEC 60793‑2‑50 and addition of provisions for B‑657 fibres; d) addition of all the attenuation and return loss grades defined in IEC 61753‑1; e) deletion of the static side load test; f) addition of provisions for rectangular ferrule connectors; g) addition of the fibre optic connector proof test with static load – side pull; h) update of the flexing of the strain relief test to use change of attenuation instead of transient loss; i) addition of Annex B for visual examination of the outer cable sheath movement of reinforced cables as an additional requirement for change of temperature, cable retention and flexing of the strain relief tests.

IEC 60794-1-126:2026 defines the test procedures used to establish uniform requirements for mechanical performance - galloping. It applies to optical fibre cables like ADSS, OPGW or OPPC that can be exposed to galloping phenomena. See IEC 60794-1-2 for general requirements and definitions and for a complete reference guide to test methods of all types. This first edition cancels and replaces Method E26 of the first edition of IEC 60794‑1‑21 published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Addition of "for ADSS" and "for OPGW and OPPC" in 4.7, a); b) Addition of "L4" in Figure 1 and in 4.7, b); c) Change of the specified static sag angle to ≤ 1,5±0,5°; d) Improvement of Figure 1;

This document specifies the requirements and test methods applicable to factory applied ceramic epoxy lining for ductile iron pipes conforming to ISO 2531, ISO 7186 and ISO 16631, excluding potable water, for operating temperature up to 50 °C.