Post-Lab Calculations and Questions

1. Calculate the average volume delivered for each tool. You should have four

averages.

2. Calculate the relative average deviation (RAD) for each tool. You should have

four RAD values.

3. Calculate the percent error for each tool. You should have four percent errors.

4. Rank the tools in order of their accuracy.

5. Rank the tools in order of their precision.

6. Rank the tools in order of their ease of use.

7. Are any tools unacceptable to use? Explain why.

8. For future labs, we will typically use either a graduated cylinder or a

volumetric pipet to deliver a specific volume. What are the advantages and

disadvantages of a graduated cylinder compared with a volumetric pipet?

9. When do you think it would be appropriate to use graduated cylinders

compared with volumetric pipets?

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