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Wood pulp & paper · General methods

Lofton Merritt modified Wisbar stain

Differentiation of pulp types. Report built on the official document(s) shown below: record the method, quality controls, method-specific findings and result. Validate the method in your own laboratory and follow local regulations.

Guideline: Official basis: ISO 9184-1 (Paper, board and pulps - Fibre furnish analysis - General method); ISO 9184-3 (Herzberg staining test); ISO 9184-4 (Graff C staining test); ISO 9184-5 (Lofton-Merritt staining test). ISO 9184-5:1990 provides the named staining method, supplementing general fibre furnish analysis.

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Wood pulp & paper · General methods

Lofton Merritt modified Wisbar stain

OfficialISO 9184-1ISO 9184-3ISO 9184-4ISO 9184-5

Official basis: ISO 9184-1 (Paper, board and pulps - Fibre furnish analysis - General method); ISO 9184-3 (Herzberg staining test); ISO 9184-4 (Graff C staining test); ISO 9184-5 (Lofton-Merritt staining test). ISO 9184-5:1990 provides the named staining method, supplementing general fibre furnish analysis.

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Method & quality control

QC: Known kraft/sulfite and bleached/unbleached pulp references
QC: unstained fibres
QC: reagent blank

Lofton-Merritt fibre analysis (ISO 9184-5)

Observations

Staining / test quality

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Smear Camera — teach STAINIC to read Wisbar Pulp Stain

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