- What are the ways to improve the accuracy of the analysis?
Choose the appropriate analytical method, increase the number of parallel measurements, and eliminate systematic errors in the assay.
- What is the relationship between accuracy and precision?
To make the accuracy high, first must require high precision, but high precision, does not mean that its accuracy is also high, because there may be a system error in the measurement, it can be said that precision is a prerequisite to ensure accuracy.
- What is system error?
The systematic error is also called measurable error. It is caused by some common original factors in the analysis process. In the repeated measurement, it will be repeated and the impact on the analysis results will be fixed.
- What are the characteristics and elimination methods of accidental errors?
Characteristics: Under certain conditions, the absolute value of the error in a finite number of measurements will not exceed a certain limit. The positive and negative accidental errors of the same size have almost equal opportunities, small errors have many opportunities, large errors have less opportunities.
Elimination method: increase the number of measurements, repeat the parallel test multiple times, take the average value, so that the positive and negative accidental errors can cancel each other out. Under the premise of eliminating systematic errors, the average value may be close to the true value.
- What are the characteristics of the system error and how to eliminate it?
Reason:
A instrument error
B method error
C reagent error
D operation error.
Elimination method: do a blank test, calibration instrument, and control test.
If you have any doubts or need more information, don’t hesitate to get in touch with WUBOLAB, the laboratory glassware manufacturer.
