The FIWE 3 is a three-position extractor suitable for raw fiber determination, conventionally known as an indigestible residue. Rapid analysis, reliable results and high reproducibility are some of the most relevant benefits of these units which are ideal for the following applications:
- total raw fiber determination (Weende)
- neutral detergent fiber and acid detergent fiber determination (NDF and ADF, Van Soest)
- acid detergent lignin determination (ADL, Van Soest)
- different fractions of fiber (cellulose, hemicellulose and pectin)

Raw fiber determination is useful for nutritional, economic and legislative aspects.
FIWE performs single or sequential extraction including boiling, rinsing and filtration.