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<p class="MsoBodyText"><span lang="EN-GB">This document specifies the principles of particle size analysis by centrifugal liquid sedimentation (CLS). It also:</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— defines the relevant terms;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— describes the various measurement techniques;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— gives guidance for sample preparation, conducting measurements as well as data analysis;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— establishes rules for method validation, determination of the uncertainty budget as well as representation of results. </span></p>
<p class="MsoBodyText"><span lang="EN-GB">An important part of this document deals with the derivation of particle size distributions from CLS data, including discussions on:</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— the impact of Brownian motion;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— the parallel determination of particle concentrations;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— the working range with respect to size and concentration;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">—the handling of non-spherical and porous particles.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document applies to samples composed of dispersions of low particle concentration, so that the particles’ motion can be considered as that of fully isolated particles. This document does not cover particle migration by gravity, electric or magnetic forces. It also does not cover deriving particle properties other than size, sedimentation velocity and sedimentation coefficient.</span></p>
<p class="Note"><span lang="EN-GB">NOTE<span style="mso-tab-count: 1;"> </span>This document can involve hazardous materials, operations and equipment. It does not purport to address all the safety problems associated with its use. Regulations regarding explosion-proof analysers can apply when examining volatile liquids with a low flash point. It is the responsibility of the user of this document to establish appropriate safety and health practices and to determine the applicability of the regulatory limitations prior to its use.</span></p>
Reģistrācijas numurs (WIID)
78457
Darbības sfēra
<p class="MsoBodyText"><span lang="EN-GB">This document specifies the principles of particle size analysis by centrifugal liquid sedimentation (CLS). It also:</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— defines the relevant terms;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— describes the various measurement techniques;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— gives guidance for sample preparation, conducting measurements as well as data analysis;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— establishes rules for method validation, determination of the uncertainty budget as well as representation of results. </span></p>
<p class="MsoBodyText"><span lang="EN-GB">An important part of this document deals with the derivation of particle size distributions from CLS data, including discussions on:</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— the impact of Brownian motion;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— the parallel determination of particle concentrations;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">— the working range with respect to size and concentration;</span></p>
<p class="MsoBodyText"><span lang="EN-GB">—the handling of non-spherical and porous particles.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document applies to samples composed of dispersions of low particle concentration, so that the particles’ motion can be considered as that of fully isolated particles. This document does not cover particle migration by gravity, electric or magnetic forces. It also does not cover deriving particle properties other than size, sedimentation velocity and sedimentation coefficient.</span></p>
<p class="Note"><span lang="EN-GB">NOTE<span style="mso-tab-count: 1;"> </span>This document can involve hazardous materials, operations and equipment. It does not purport to address all the safety problems associated with its use. Regulations regarding explosion-proof analysers can apply when examining volatile liquids with a low flash point. It is the responsibility of the user of this document to establish appropriate safety and health practices and to determine the applicability of the regulatory limitations prior to its use.</span></p>
