GB/T 12997-1991 Focus on the design of water quality sampling schemes. A reasonable sampling scheme is a prerequisite for obtaining accurate water quality data. The standard specifies the purpose of sampling and guides how to determine sampling stations according to water characteristics and monitoring needs, such as different sections of rivers and different areas of lakes. Specify the sampling Frequency, taking into account daily and special time monitoring. It also describes the selection of sampling methods and the principle of determining the number of samples. From the pre-planning to the implementation of the plan, it provides comprehensive specifications to help monitors formulate scientific sampling schemes, laying a solid foundation for the effectiveness and accuracy of subsequent water quality testing.
| Status | Active |
|---|---|
| CCS | Z12 | ICS | 13.060 |
| Release Date | 1991-01-15 00:00:00 | Implementation Date | 1992-03-01 00:00:00 |