Abstract: Summary: Have analysed relevant from eight oxide three uraniums allocation standards solution process middle parameter information. If balance, attracts impacts of factor over uranium standard solution measurement indeterminacy such as burette, capacities bottles, buret, these factors have reflected measurement system uncertainty essential features, the main cause being the measurement system indeterminacy that the error source arouses in fact, has thought that the error source indeterminacy to right index characteristic appraises, the solution calculating out the uranium standard composes indeterminacy and the result expanding indeterminacy is 0.44% . Solution measurement result expresses the uranium standard for (25.29 +/-0.44) Bq/mL