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Quality Control Sample

1. What is quality-control sample?

Quality-control sample, which had been tested by PT participants,has a a certificate with designed value, uncertainty and the standard deviation of certain parameters, etc.

2. What is the quality-control sample used for?

1) Laboratory internal quality control;

2)To evaluate and verify new methods in laboratories;

3) Inspection of the laboratory instruments and equipment;

4)To evaluate the technical capacity of the analysis testing personnel in laboratories;

5)To practice before participate in PT schemes.