กระดาษและผลิตภัณฑ์กระดาษ
เอกสารมาตรฐาน
สหรัฐอเมริกา
TAPPI
T 534 om-22
Diffuse brightness of clay and other mineral pigments (d/0 diffuse) – ultraviolet level C
2022
10
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This method describes a procedure for determining the brightness of clay and other mineral pigment
that has been pulverized under controlled conditions and made into uniformly compacted pigment plaques. This
method is for use with minerals normally used in the manufacture of paper and is not intended for highly colored
pigments. ....