Last Updated 13 May 2021

Formal Lab Report Format

Category Data, Experiment
Essay type Report
Words 328 (2 pages)
Views 11
Table of contents

Experimental Procedure

If the procedure in the lab manual was followed exactly, it is sufficient to state the following: "The experimental procedure used for this experiment was outlined in the CHEM 123L lab manual, Experiment #1. All steps were followed without deviation. " You must include your lab manual in your reference section if you use this technique.  If the procedure in the lab manual was not followed exactly, you must explain what was done differently.  Marks are not assigned for the procedure, but will be deducted if you do not include it in your report.

Experimental Observations

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Present all experimental observations; what did you see / hear / feel happening as the experiment was proceeding? Enter original observations such as weights, volumes, temperatures etc. with units.  Tabulate experimental data (ie, present your data in a table) whenever possible, this helps the reader quickly compare your data. Include appropriate table titles, labels and units.  In some lab reports the observations may be incorporated into the results section.

Results & Calculations

Show one sample calculation to illustrate how each type of calculation was performed. Use appropriate units and significant figures.  Tabulate calculated results, whenever possible. Tables must have appropriate titles, labels and proper units.  Refer to Appendix B: Data Analysis, for information on plotting experimental data.


Generally describe what was done and what was accomplished in the lab. What concepts or ideas did the experiment prove, show, reinforce, etc . Compare experimental results with values found in the literature (if any).

If your values do not agree with literature values, discuss why this may be. ? Briefly discuss possible sources of observed errors. If your results are erroneous, explain what was done wrong in the experiment that may account for the observed results.


Restate purpose and/or objectives of the experiment and give conclusions as to whether or not they were achieved.  State all experimental findings regarding unknowns .Comments regarding the effectiveness or reliability of experimental methods can be made here as well.

This essay was written by a fellow student. You can use it as an example when writing your own essay or use it as a source, but you need cite it.

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