標準號：ISO 13317-1-2001
中文標準名稱：用比重液體沉積法測定粒度分布 第1部分：一般原則和指南
英文標準名稱：Determination of particle size distribution by gravitational liquid sedimentation methods - Part 1: General principles and guidelines
標準類型：N50
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：N50
國際標準分類號：19.120
適用范圍：This part of ISO 13317 covers methods for determining the particle size distributions of participate materials, typically in the size range 0,5 μm to 100 μm, by gravitational sedimentation in a liquid. NOTE This part of ISO 13317 may involve hazardous materials, operations and equipment. This part of ISO 13317 does not purport to address all the safety problems associated with its use. It is the responsibility of the user of this part of ISO 13317 to establish appropriate safety and health practices and to determine the applicability of the regulatory limitations prior to its use. The methods of determining the particle size distribution described in this part of ISO 13317 are applicable to slurries or to particulate materials which can be dispersed in liquids. A positive density difference between the discrete and continuous phases is necessary, although gravitational photosedimentation can be used for emulsions where the droplets are less dense than the liquid in which they are dispersed. Particles should not undergo any physical or chemical change in the suspending liquid. The usual precautions need to be taken with hazardous material, and explosion proof analysers are required when examining volatile liquids with a low flash point.