Many buildings and industrial processes require specific relative humidity operating ranges. These relative humidity operating ranges typically require dehumidification. In the article “Manufacturing the Right Moisture” (Engineered Systems, April, 2007), I discussed how to calculate the amount of moisture that needed to be removed, recommended space relative humidity, and provided a brief discussion on available dehumidification technologies. This article will provide dehumidification industry standards and offer in-depth discussion on available dehumidification technologies.