Lab Report – How to Write It Step-by-Step with Examples

14.12.22 Types of research papers Time to read: 4min

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Lab-report-Definition

As a student who’ll require analysing experiments, lab reports are an essential part of your curriculum and are usually necessary for your grades. A lab report is a critical aspect of academic writing in the sciences, providing a structured method for documenting experimental procedures and findings. This form of writing is essential for communicating scientific results and contributes to the broader scientific dialogue by sharing knowledge and promoting reproducibility of research.

Lab Report – In a Nutshell

Lab reports are essential when conducting experiments in different scientific fields. It’s vital for students and professionals to always present well-written reports.

Structure your research correctly to create a lab report that does the following:

  • May suggest adjustments and improvements to pre-existing methods.
  • Propose future research and experiments.
  • Show the important work you conducted.

Definition: Lab report

A lab report conveys a scientific experiment’s methods, purposes, results, and conclusions, like testing the viscosity of different liquids in the kitchen.

The primary aim of a lab report is to show that you understand a specific scientific method by performing a hands-on lab experiment.

Most individuals use lab reports in STEM fields (Science, Technology, Engineering, and Mathematics).

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Lab report essentials

Lab report essentials contain the methods used, the study’s purpose, and the outcomes of a lab experiment. Structure a lab report in the following way:

Title

In a lab report, your title is your reader’s first impression and communicates the findings or topic of your research.

It should inform your readers of:

  • Your research’s purpose
  • and primary focus.
Lab-report-example-titleLab-report-example-title

Abstract

Write an abstract in the past tense at the end of your report. An abstract gives readers a preview of your study in about 150-300 words and a summary.

It shows:

  • The materials and methods
  • research aims,
  • conclusion,
  • and main results.
Lab-report-example-abstract

Introduction

This lab report section introduces your audience to your research topic and study’s focus. Structure your introduction using an inverted triangle or funnel method:

  • Generally, start with the broader research topic
  • Narrow the issue down to your specific study focus
  • Finish with a clear and specific research question

Start by giving background information on your research topic and why it’s essential in a real-world context. Describe your previous studies on the subject and state how your study may expand, fill a gap or confirm your research.

Lab-report-example-introduction

Hypotheses

Next, detail the theoretical basis for your study and describe any relevant equations or laws that you’ll use. Let your hypotheses show your main expectations and research aims.

Lab-report-example-hypotheses

Method

In your lab report, write the methods you used to collect and analyse data in the past tense. Describe the following:

  • Experimental design: Note whether your study is a between-subjects or within-subjects design.
  • Subjects: Place humans in demographics and animals in genetics – state how you recruited subjects and their number per condition per group.
Lab-report-example-experimental-design
  • Materials: List materials you used and model names for all specialized equipment.
Lab-report-example-Materials
Lab-report-example-experimental-setting
  • Procedures: Note down the steps you took to collect information chronologically.
Lab-report-example-procedures

Results

State any results you took from any statistical analysis procedure in this lab report section to show how they refute or support your previous hypotheses. Your results may include:

Report your results using tables and figures where appropriate, highlight critical developments and show related variables using graphs. Also, include sample calculations for complex experiments. Refer to raw data in the Appendices section when highlighting any outliers or trends.

Lab-report-example-results

Discussion

Demonstrate your critical thinking skills and understanding of the experiment process in the discussion section of the lab report. Here, you can:

  • Interpret your results
  • Compare your expectations and findings
  • Identify experimental error sources
  • Explain unexpected results
  • Suggest potential improvements for further research

Report whether your results answer your research question and support your hypotheses.

A practical discussion section also highlights the limitations and strengths of your study.

Use specific examples when describing limits. For instance, if random errors contributed to your research, write “imprecise apparatus” and suggest improvement methods.

Lab-report-example-discussions

Conclusion

The conclusion is the last part of your lab report and summarizes your findings, giving a brief overview of your study’s strengths, limitations, and implications.

While some reports may remove this section for overlapping with the discussion section, consult with your instructor before doing so.

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FAQs

A lab report has different sections depending on the research field. However, they all contain:

  • Title
  • Abstract
  • Introduction
  • Methods
  • Results
  • Discussions
  • Conclusions
  • References
  • Appendices

Course instructors usually give you a procedure and experimental design, allowing you to experiment to evaluate the outcomes in a lab report.

A research paper requires you to develop an initial argument, do in-depth research, and interpret your data and sources.

A lab report is generally 5 to 10 pages, including tables and figures, depending on your experiment; however, there’s no set page limit.


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Salome Stolle

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About the author

Salome Stolle works as the brand manager for the English market at BachelorPrint. Throughout her 12-year residency in Denmark, she completed her International baccalaureate and Master’s in Culture, Communication, and Globalization with a specialization in media and market consumption. Through this experience, she has gained advanced competencies in academic writing and a high proficiency level in the English language. With her passion for writing, she does not only deliver well-written content but also strives to adjust to the students’ demands.

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