Rechercher

The purpose of this Guide is to identify a series of procedures which a national certification body (non-governmental) should consider in deciding how to respond to a reported misuse of its registered mark of conformity (i.e. violation of a contract, inadequate quality control, or error in assessment of conformity) or a situation in which a certified product is subsequently found to be hazardous…

1. Scope 1.1 This Recommended Practice describes a procedure for the prediction of sound pressure levels in a large room containing a number of sound sources. This procedure may be used to compute A-weighted, octave, or fractional octave band sound pressure levels over continuous contours, or at specific points, to predict: (a) Sound pressure levels at the design stage; (b) The…

Sets forth requirements for hose material for conducting flammable and combustible liquids handled at temperatures within the range of -40°C to +50°C, primarily into the fuel storage tank of the end use vehicle.

Covers the method of test for determining the comparative burning characteristics of the material or assembly under test and is applicable to any type of building material that by its own structural qualities, is capable of supporting itself in position in the test furnace.

Covers the method of test for determining the comparative burning characteristics of the material or assembly under test and is applicable to the finished surface or covering of a floor extending to a maximum depth of 65 mm.

Establishes a layout for standard methods of analysis and gives some recommendations for their presentation and wording. This layout involves the use of appropriate terminology, indicated in ISO 6955. Supplements ISO 6956, which summarizes the principle of atomic absorption.

Specifies the characteristics or straight asbestos-cement corrugated sheets and their asbestos-cement fittings to be used for roofing and cladding. Specifies also the checking of these characteristics as well as marking and conditions of acceptance. By agreement between manufacturer and purchaser certain requiremants can apply to curved corrugates sheets. Is not applicable to asymmetrical section…

A 0,5 % (m/m) aqueous soap solution is prepared, and after maintaining this at testing temperature for 24 h, an aliquot portion of this solution is taken. This aliquot portion is mixed with a dilute solution of the dispersing agent (surface active agent) and subsequently with a specified volume of water of known calcium hardness. The mixture is maintained for 1 h at the testing temperature and…

A buffered acetonic solution of a test portion is titrated with a standard volumetric lead(II) nitrate solution in the presence of dithizone as indicator. The method is applicable to anionic surface active agents, containing sodium, ammonium and alkanolamine sulphates. It is not applicable to products containing other compounds such as phosphates or large amounts of chloride nor is it applicable…

Applies to linearly polarized receiving aerials for domestic use in the frequency range 30 MHz to 1 GHz. Ensures uniformity in the presentation of aerial performance specifications and provides a standard format for individual aerial specification sheets. This publication supersedes IEC 60138 (1962).