You can save the mixture to be used at a later time. It is recommended that you filter or strain the mixture through a membrane (coffee filters work well) to remove any sediment. It is recommended that you store this mixture in an air tight plastic container such as an old milk jug or plastic soda bottle. DO NOT store in a metal container. If a deceleration is noticed on re-use you can add more Fertan Rust Remover to the mixture to enhance the mixtures potency.