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  • Revision:2015 Edition, 2015
  • Published Date:January 2015
  • Status:Active, Most Current
  • Document Language:English
  • Published By:Technical Association of the Pulp and Paper Industry (TAPPI)
  • Page Count:17
  • ANSI Approved:Yes
  • DoD Adopted:No

  • This method provides a procedure for the identification of thekinds of fibers present in a sample of paper or paperboard andtheir quantitative estimation. This method requires the analyst beskillful and experienced in the field of pulp and papermicroscopy. 

    The analyst must make frequent use of standard samples of knownfiber composition or of authentic fiber samples and must becomethoroughly familiar with the appearance of the different fibers andtheir behavior when treated with the various stains. 

    Morphological characteristics help identify special fibers suchas straw, flax, esparto, soft woods, such as southern pine, Douglasfir, western hemlock, and various species of hardwoods, so that thecorrect weight factors may be applied. A knowledge of morphologicalcharacteristics of the different fibers is essential for theiridentification. More information on this subject is given in theAppendices. 

    It is reported that fiber analysis in highly refined orsecondary fiber sheets is very difficult to perform.