กระดาษและผลิตภัณฑ์กระดาษ
เอกสารมาตรฐาน
สหรัฐอเมริกา
TAPPI
T 504 cm-21
Glue in paper (qualitative and quantitative determination)
2021
6
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This method deals with the qualitative and quantitative determination of animal glue in paper in
quantities that are used for sizing high grade papers (1). It is applicable to glue hardened with formaldehyde, alum,
or amino-formaldehyde resins, and to photographic papers. This method can also be used in the determination of
gelatin (a more highly refined form of animal protein). ....