FIWE Fiber Analyzers


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Crude and Detergent Fiber Determination according to Official Methods

Fiber Analyzers that use pre-heated reagents for fiber analysis according to Weende, Van Soest and other official methods.


  • The Weende method, the oldest analytical procedure still in use today, in which fiber concentration is measured as crude fiber (CF)
  • The Neutral Detergent Fiber (NDF), a method developed by Van Soest, now the most common measure of fiber used for animal feed analysis 
  • Acid Detergent Fiber (ADF), a portion of the plant fiber and includes cellulose, lignin and variable amounts of xylans.
  • Acid Detergent Lignin (ADL) determination and Wijkstrom technique, a modification of the Weende method.