กระดาษและผลิตภัณฑ์กระดาษ
เอกสารมาตรฐาน
สหรัฐอเมริกา
TAPPI
T 226 cm-11
Specific external surface of pulp
2011
7
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This method, based on the silvering method devised by Clark (1), is used to determine the specific exposed surface
of unbeaten, or only slightly beaten, chemical pulps, groundwood, wood flour, and similar materials. It is not suitable for
finely fibrillated or well-beaten fibers, since the silvering step causes some of the finest fibrils to collapse and hence
lowers the exposed area (2).