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This document specifies a method of extracting, for analysis, acid soluble contaminants from a surface by use of flexible cells in the form of adhesive patches or sleeves which can be attached to any surface, regardless of its shape (flat or curved) and its orientation (facing in any direction, including downwards). The described method is suitable for use in the field to determine the presence of acid soluble contaminants before painting or a similar treatment. This document does not cover the subsequent analysis of the contaminants that have been dissolved off. Methods of analysis suitable for field use are described in other parts of ISO 8502 such as ISO 8502-5. This document is similar in procedure to, but not equal to, ISO 8502-6. The main difference is the solvent used and the subsequent analysis that can be performed on the extraction solution.

 

This document specifies a field method for the assessment of the surface density of various water-soluble salts on steel surfaces, before and/or after surface preparation, by conductometric determination. The individual surface densities of the salt composition like chlorides, sulphates, sodium, etc, cannot be determined by this method. This method assesses only contaminants that forms an electrolyte (ions) when in contact with water. These represent the greater part of the contaminants.

 

This document specifies a method for the determination of extractable metals in leather using extraction with an acid artificial-perspiration solution and subsequent determination with inductively coupled plasma optical emission spectrometry (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), atomic absorption spectrometry (AAS) or spectrometry of atomic fluorescence (SFA). This method determines extractable metals in leather; it is not compound-specific or specific to the oxidation state of the metals. This method is especially suitable for determining the extractable chromium in chromium-tanned leathers. The method is applicable for the determination of many extractable metals, including: Interlaboratory test results and the quantification limits possible with ICP-OES are given in Table A.1 and Table A.2 of Annex A.

 

This document specifies the requirements on rail gas pressure welding, including the requirements for approval process, laboratory tests, production test, approval of contractor/welder, as well as the acceptance criteria of gas pressure welds in track. This document concerns the welding of 43 kg/m – 75 kg/m new vignole rails of the same profiles and the same grades. This document is restricted to butt welding for connecting rail ends. NOTE Conformity with the requirements of this standard does not ensure the suitability of a welding process for specific conditions of track and traffic. This document does not cover welds made between different rail sections, differently worn rails or different rail grades.

 

 

 

 

 

This document specifies the geometric concepts and parameters for cylindrical gears with involute helicoid tooth flanks. Flank modifications are included. The formulae in this document apply to all pressure angles. It also covers the concepts and parameters for involute cylindrical gear pairs with parallel or crossed axes, and a constant gear ratio. Gear and mating gear in these gear pairs have the same basic rack tooth profile.

 

This document specifies minimum requirements of performance characteristics for the detection and quantification of nucleic acid sequences (DNA or RNA) by PCR-based assays. The PCR-based assays specified in this document do not include culturing and nucleic acid extraction stages. NOTE ISO 22174:2024 [5], clause 13, states that this document specifies the performance characteristics for PCR-based methods. To differentiate from complete methods, which are evaluated according to validation standards such as the ISO 16140 series, the term "PCR-based assay" is used in this document. This document applies to the detection and/or quantification of nucleic acids of microorganisms (bacteria, yeasts, moulds, viruses and protozoan parasites) associated with: products intended for human consumption; products for feeding animals; environmental samples in the area of food and feed production and handling; samples from the primary production stage. This document, or parts of it, is also applicable to other fields of PCR diagnostics based on a case-by-case evaluation. This document does not apply to sequencing methods or isothermal amplification methods like loop mediated amplification (LAMP) or nucleic acid sequence-based amplification (NASBA).

 

This document gives guidance on a consistent approach to justify the claims associated with the use of plant biostimulants. This document is aimed primarily at manufacturers, laboratories, researchers, technical centres, and companies that intend to place plant biostimulants on the market, as well as notifying authorities, notified bodies, and market surveillance authorities. To be in compliance with this standard, it is important to also follow the recommendations and quality criteria described in the standard ISO 37700-1:2026on general principles to demonstrate plant biostimulant claims.

 

This document specifies the general principles for justifying the product claims for plant biostimulants. It is applicable to all claims and all types of application of plant biostimulants. General principles define all general parameters, requirements and quality criteria to be applied in order to assess trials conducted to validate the claim(s) associated with the use of a plant biostimulant. This document is aimed primarily at manufacturers, laboratories, researchers, technical centres and companies that intend to place plant biostimulants on the market, as well as notifying authorities, notified bodies, and market surveillance authorities.

 

This document specifies the evaluation of natural language processing systems, in the sense of measuring the quality of a system’s results to assess its functional suitability. It provides a definition of evaluation methods for those systems, together with guidance on how to select, implement and interpret those evaluation methods. This document covers quantitative metrics as well as other evaluation methods. It includes requirements on the implementation of the described metrics, and further requirements on the technical resources involved in the evaluation process.

 

 

This document gives guidance and requirements for the assessment of conformity of compounds, products, joints and assemblies in accordance with the applicable part(s) of EN 1555, intended to be included in the manufacturer’s quality plan as part of the quality management system and for the establishment of certification procedures. NOTE 1 A test matrix provides an overview of the testing scheme in Annex B, Table B.1. NOTE 2 If certification is involved, the certification bodies and inspection bodies operating in accordance with EN ISO/IEC 17065 [2] and EN ISO/IEC 17020 [4] are considered to be competent. Mechanical fittings according to ISO 17885 are not covered in this document. In conjunction with EN 1555-1, EN 1555-2, EN 1555-3, EN 1555-4 and EN 1555-5, this document is applicable to PE pipes, fittings, and valves, their joints and joints with components of PE and other materials intended to be used under the following conditions: a) a maximum operating pressure, MOP, up to and including 10 bar , at a design reference temperature of 20 °C; b) an operating temperature between -20 °C and 40 °C. For operating temperatures between 20 °C and 40 °C, derating coefficients are specified in EN 1555 5. The EN 1555 series covers a range of MOPs and gives requirements concerning colours. It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national guidance or regulations and installation practices or codes.

 

This document specifies the evaluation of natural language processing systems, in the sense of measuring the quality of a system’s results to assess its functional suitability. It provides a definition of evaluation methods for those systems, together with guidance on how to select, implement and interpret those evaluation methods. This document covers quantitative metrics as well as other evaluation methods. It includes requirements on the implementation of the described metrics, and further requirements on the technical resources involved in the evaluation process.

 

ISO 22118:2010 specifies minimum requirements of performance characteristics for the detection of nucleic acid sequences (DNA or RNA) by molecular methods. ISO 22118:2010 applies to the detection of food-borne pathogens in foodstuffs and isolates obtained from them using molecular detection methods based on the polymerase chain reaction (PCR). ISO 22118:2010 is also applicable, for example, to the detection of food-borne pathogens in environmental samples and in animal feeding stuffs.

 

This document specifies design, assembly, installation and commissioning requirements for pump sets for use in sprinkler systems conforming to EN 12845:2015+A1:2019. Where applicable, this document can also be used for pump sets for other water based fixed firefighting systems.

 

This document provides guidance for sectoral stakeholders and product manufacturers in generating ICT product-relevant information based on EN 18037. Sectoral stakeholders are supported in applying the risk and cybersecurity assessment methodology so that the information needs of product manufacturers are covered by the sectoral assessment report. Product manufacturers receive guidance in using methodology according to EN 18037 for own assumptions of their ICT product’s sector-specific risks and security requirements. This document uses a step-by-step approach for guiding sectoral stakeholders and product manufacturers through the assessment. For each step, the relevant information provided by EN 18037 is summarized or referenced and the enhancements or clarifications in support of the information needs of the ICT product manufacturers are pointed out. From the perspective of product manufacturers, the re-use of existing product-specific specifications and certification tools is of particular relevance. Therefore, this document provides guidance how the results of sectoral assessments according to EN 18037 can be connected with these specifications and tools.

 

ISO 17234-2:2011 is supplementary to ISO 17234-1 and describes a special procedure to detect the use of certain azo colorants in commodities, which can release 4-aminoazobenzene. The procedure also detects 4-aminoazobenzene (Solvent Yellow 1) which is already available as free amine in commodities without reducing pretreatment. Azo colorants that are able to form 4-aminoazobenzene generate, under the conditions of ISO 17234-1, the amines aniline and 1,4-phenylenediamine. The presence of these 4-aminoazobenzene colorants cannot be reliably ascertained without additional information (e.g. the chemical structure of the colorant used) or without a special procedure.