Moisture content is one of the most important variables and challenges, the high quality producer must face. Excessive moisture is usually undesirable in many products; both organic and synthetic such as foodstuff, plastic, paper, wood, drugs, cement etc. Likewise, many products can experience strength and integrity degradation when too much moisture is present. Moisture content can generate many kinds of undesirable effects, including processing problems, poor surface on molded parts, or loss of mechanical properties adding extra drying costs. Keeping moisture under control during the whole production cycle allow considerable savings to the companies.