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Low-cost device for constructing sorption isotherms

Gibert O., Méot J.M., Marouzé C., Brouat J.. 2006. Drying Technology, 24 (12) : p. 1697-1704.

DOI: 10.1080/07373930601031687

Water activity is the main criterion for characterizing the storage and drying behavior of biological products. As current standardized devices are expensive, a cheaper apparatus was designed and built. After preliminary tests, functional specifications were determined. This gravimetric device was tested and validated on microcrystalline cellulose and then used for the characterization of various tropical products. This operational equipment, easy to handle, robust, and four times cheaper than the reference apparatus, was able to obtain accurate sorption isotherms.

Mots-clés : sorption; matériel; caractéristique du matériel; activité de l'eau; séchage; stockage; produit biologique; standardisation; isotherme de sorption

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