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ISO 13320:2020
Hind 163,83 EUR
Particle size analysis -- Laser diffraction methods
This document provides guidance on instrument qualification and size distribution measurement of particles in many two-phase systems (e.g. powders, sprays, aerosols, suspensions, emulsions and gas bubbles in liquids) through the analysis of their light-scattering properties. It does not address the specific requirements of particle size measurement of specific materials. This document is applicable to particle sizes ranging from approximately 0,1 �m to 3 mm. With special instrumentation and conditions, the applicable size range can be extended above 3 mm and below 0,1 �m. For spherical and non-spherical particles, a size distribution is reported, where the predicted scattering pattern for the volumetric sum of spherical particles matches the measured scattering pattern. This is because the technique assumes a spherical particle shape in its optical model. For non-spherical particles the resulting particle size distribution is different from that obtained by methods based on other physical principles (e.g. sedimentation, sieving).
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prEN IEC 61010-2-020:2020
Identne IEC 61010-2-020:201X; prEN IEC 61010-2-020:2020
Tähtaeg 15.03.2020
Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-020: Particular requirements for laboratory centrifuges
This clause of Part 1 is applicable except as follows: 1.1.1 Scope Replacement: This Part 2 is applicable to electrically powered LABORATORY CENTRIFUGES. NOTE If all or part of the equipment falls within the scope of one or more other Part 2 standards of IEC 61010 as well as within the scope of this standard, it will also need to meet the requirements of those other Part 2 standards. 1.1.2 Equipment excluded from scope Addition: Add the following new item: aa) IEC 60034 (Rotating electrical machinery);
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