Removal of Liquids Prior To SteamingIt is important Formosa removes as much of the hydrocarbons as possible from the unit prior to steaming and decontamination. Zyme-Flow Decon Technology ask that 5% or less hydrocarbons remain immediately prior to decontamination. An excess of oils will lead to an increase in chemical usage and decontamination time, neither of which are desirable and both of which can be avoided if the unit is drained systematically.