The Schirmer test USES filterpaper to wick up tears and measure the amount of production, as shown in a patient with Sjogren syndrome.
Schirmer试验以滤纸条作为工具，测量泪液的产生量，如图所示为一名患干燥综合征的病人。
2
While he wanted to filter out the water and continue the experiment, he found that instead of getting hydroxyapatite powder on the filterpaper, a film formed on the paper.
当他想过滤掉水继续试验的时候，他发现留在过滤纸上的不是羟基磷灰石粉末，而是形成了一张薄膜。
3
Screw air compressor used for air filterpaper type.