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This document specifies requirements for reference lenses for the calibration and verification of focimeters that are used for the measurement of spectacle form lenses, e.g. those complying with ISO 8598-1. It also gives a method for the determination of the back vertex power of the reference lenses. NOTE            It is accepted that other reference lenses can also be used with powers within…

This document specifies requirements and recommendations for the design and execution of an interlaboratory comparison for validation of new standardized analytical methods in the field of water analysis, e.g. the number of participating laboratories and time schedules. This document is based on ISO 5725-1 and ISO 5725-2. NOTE            The scope of other standards in the field of…

These international guidelines are based on the assumption that monitoring of environmental components (atmosphere, water, soil and biota) as well as food quality is performed to ensure the protection of human health[5][7][8][9][10][11][12]. The guidelines constitute a basis for the setting of national regulations, standards, and inter alia, for monitoring air, water and food in support of public…

IEC 62044-3:2023 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 62044-3:2023 specifies measuring methods for power loss and amplitude permeability of magnetic cores forming the…

This document specifies the manufacturing characteristics, the dimensions, the tolerances, the methods for quality control and delivery conditions, the measurement and the marking of hardwood and softwood raw parquet elements. NOTE       The classification of raw parquet elements according to specific characteristics and wood defects are specified, for the different species of wood, in the…

This document lists gas cylinders valve outlets in use. This document provides details of thread types and sizes. NOTE       Complete descriptions of particular valve outlets are given in national standards.

This document provides in detail how the standards of fine bubble technologies can contribute to establish the systematic classification of fine bubble technologies including the effective functions and the application fields of fine bubbles, which is useful for the users and the potential customers to optimize the application of fine bubble technologies.. This document also specifies the clauses…

This document specifies methods to evaluate the performance of a specific class of analytical instruments, known as compliance monitoring devices (CMDs). These instruments are designed and intended to examine ballast water to determine whether a sample meets or exceeds limits for the concentration of living or viable organisms. These limits include those specified by the International Maritime…

IEC 62561-3:2023 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 62561-3:2023 specifies the requirements and tests for isolating spark gaps (ISGs) for lightning protection…

IEC 60204-32:2023 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 60204-32:2023 edition 3.0 and the previous IEC 60204-32:2023:2008 edition 2.0. Furthermore, comments from IEC TC 44 experts are provided to explain the reasons of the most relevant changes, or to clarify any part…