Standard Solutions for Volumetric Analysis are the solutions of reagent with an accurately known concentration, mainly used for the volumetric analysis. They are prepared to a specified molar concentration. A 1 molar solution is a solution which contains exactly 1 mol of a specified substance in each 1000 mL of the solution and is designated as 1 mol/l. If necessary, these solutions are diluted to other specified molar concentrations and the diluted solutions are also used as standard solutions.