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Report on the 3rd Pilling Round Trial of IWTO Pilling Working Group ...

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<str<strong>on</strong>g>Report</str<strong>on</strong>g> <strong>on</strong> <strong>the</strong> 3 rd <strong>Pilling</strong> <strong>Round</strong> <strong>Trial</strong> <strong>of</strong> <strong>IWTO</strong><br />

<strong>Pilling</strong> <strong>Working</strong> <strong>Group</strong> DTM<br />

� Reas<strong>on</strong> Analysis <strong>on</strong> Factors which will influence <strong>on</strong><br />

Precisi<strong>on</strong> <strong>of</strong> Test Results in ICI <strong>Pilling</strong> Box Method<br />

� Precisi<strong>on</strong> <strong>of</strong> a test method includes both precisi<strong>on</strong> under<br />

repeatability c<strong>on</strong>diti<strong>on</strong>s and precisi<strong>on</strong> under reproducibility<br />

c<strong>on</strong>diti<strong>on</strong>s. It’s seen from test results <strong>of</strong> several <strong>Pilling</strong> <strong>Round</strong><br />

<strong>Trial</strong>s and statistical results in Table 1 that this test method<br />

shows a good repeatability but comparatively bad<br />

reproducibility when pilling grade lies between grade 3.5~<br />

grade 2.

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