When we use chemical analysis or instrumental analysis for analytical determination, it is often necessary to configure a standard solution. A standard solution is one in which the quantity of its principal composition or other properties is known. According to the different uses, it is divided into standard solution for titration analysis, standard solution for impurity determination and standard solution for pH measurement. The following is a small edition of Bolinda to introduce the use and management system of standard solutions.

Standard solution use and management system:

1. The preparation, calibration and use management of standard solution shall be responsible for the laboratory.

2, the preparation of the standard solution must be strictly in accordance with the GB/T601-2002 titration analysis (capacity analysis) with the preparation of the standard solution, special preparation and calibration, and not less than two people, the calibration process should be recorded in detail.

3, the standard solution shall be marked management, the prepared standard solution shall indicate the name, concentration, reference substance name, preparation person, preparation date, calibration date, storage time on the label, and be placed reasonably, properly kept by a special person.

4, the preparation of standard solution and calibrator to fill in the "standard solution preparation and calibration of the original record". The prepared standard solution may be used only after it is approved by the director of the laboratory.

5, the standard solution should be placed separately in the laboratory, and ensure that the indoor environmental conditions meet the requirements; The storage time of the calibrated standard solution at room temperature shall not exceed two months; The standard solution exceeding the deadline shall be re-calibrated by the preparation personnel, and corresponding records and labels shall be made.

6, inspectors using standard solution found abnormal, should be timely to the director of the report, do the appropriate treatment.

The above content is the introduction of the use and management system of standard solution. Personally, the standard solution and the standard titration solution are the same, and the standard titration solution is also called the standard solution. If you want to strictly distinguish it may be a wide range of standard solutions, for example, you can put a coarse solution is also called a standard solution, but can not be used to titration.