A natural seaweed based product, powdered alginate can be combined with water to create a flexible mould. It is ideal for making impressions of small to medium sized objects and is safe to use for life casting, accurately rendering small details. The alginate can be mixed 1 part water to 1 part powder for applying with a brush, or 2 parts water to 1 part powder to give a pouring consistency. The approximate setting time is 3-4 minutes. Once opened, store in an airtight container.