ISO 9184-4:1990

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Paper, board and pulps -- Fibre furnish analysis -- Part 4: Graff C staining test

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ISO 9184-4:1990

Paper, board and pulps -- Fibre furnish analysis -- Part 4: Graff C staining test

PUBLISH DATE 1990
ISO 9184-4:1990

This part specifies the preparation, use and colour reactions of Graff "C" stain.

It should be used in conjunction with ISO 9184-1 and, if necessary, with other staining tests defined in ISO 9184-2.

Graff "C" stain allows the identification of almost all the common papermaking fibres. However, this calls for a great deal of training and experience.

Thus, main applications are:

  • differentiation of chemical, semi-chemical and mechanical pulps,
  • differentiation of kraft and sulfite in hardwood pulps,
  • differentiation of softwood and hardwood pulps (except dissolving grade pulps),
  • differentiation of bleached straw and esparto pulps in softwood pulps.
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