| 摘要 |
PROBLEM TO BE SOLVED: To easily and accurately perform measurement of a high-concentration sample by forming a sample layer having an appropriate thickness which never causes multiple scattering. SOLUTION: A sample cell used in a laser diffraction scattering particle size distribution measuring device includes a groove 61 formed in a transparent plate to extend from one end to the other end thereof as a sample storage part for high-concentration sample. The width W of the groove is set larger than the width of laser beam, and the height of the groove is set almost equal to the size of the largest particle contained in a measurement sample group. A sample layer having an appropriate thickness which causes multiple scattering can be formed by placing a sample on the groove 61 and removing the excess sample by a scraper. After completion of one sample measurement, the sample left in the groove can be easily removed by a brush or the like. COPYRIGHT: (C)2009,JPO&INPIT
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