Verifying a Calibration Model Digital Badge

Contact Information

The Verifying a Calibration Model badge is a competency badge offered by the Department of Chemistry and Biochemistry. Content and skills are learned and demonstrated through academic coursework in an analytical chemistry laboratory setting.

Earning Criteria

Participants earning this badge are required to prepare a stock solution and calibration standards, create a linear calibration model with residual plot, submit a narrative discussion of the fitness of their calibration model, and analyze tolerance of data for an external control.

Competencies Demonstrated

1. Operate an analytical balance to weigh a standard accurately.
2. Calculate the amount of stock solution needed to prepare calibration standards.
3. Use volumetric glassware to achieve the required final volume of solution.
4. Create a linear calibration model in a spreadsheet program
5. Evaluate the coefficient of determination (R² value) and ensure it has a value of 0.99 or greater
6. Construct a residual plot from values derived using the calibration model.
7. Judge if the error in the signal of the calibrators is randomly distributed.
8. Analyze an external control and use the calibration model to determine its concentration.
9. Calculate the percent error and ensure it is less than 10%.