How to Check Grammar in a Scientific Manuscript Before Submission

Grammar checking is more than correcting spelling mistakes. Scientific writing depends on precise sentence structure, consistent terminology, appropriate verb tenses, and clear descriptions of methods and results. A small language error can sometimes change the meaning of a technical statement or make a sentence harder to interpret.

Journal publishers commonly include grammar and spelling checks in their submission requirements. For example, Elsevier’s generic submission checklist asks authors to ensure that their manuscript has been spell-checked and grammar-checked, along with checking references and other submission elements. A final language review should therefore be part of your pre-submission workflow, not something you do only after receiving reviewer comments.

What Should You Check in a Scientific Manuscript?

A thorough grammar check should go beyond individual errors. You need to review the manuscript at both the sentence level and the document level. This includes grammar, verb tense, spelling, punctuation, sentence structure, terminology, abbreviations, and academic style.

It is also important to check whether these elements remain consistent throughout the manuscript. A paper may be grammatically correct but still contain variations in terminology, capitalization, abbreviations, or spelling that make the writing appear inconsistent. The ICMJE recommends using standard abbreviations, defining them at first use, and following the target journal’s requirements for style and formatting.

How to Check Grammar in a Scientific Manuscript

1. Start With a Section-by-Section Review

Begin by reading each section of the manuscript with its purpose in mind rather than correcting every sentence immediately. In the Introduction, check whether the research problem, purpose, and hypothesis are expressed clearly. In the Methods, look closely at sentence structure, tense, articles, and prepositions when describing procedures. The Results should report findings clearly, while the Discussion should distinguish your findings from broader interpretations.

For example:

Before:
“The samples was collected from three locations and were analyzed using…”

After:
“The samples were collected from three locations and analyzed using…”

The correction is simple, but grammar errors involving subject-verb agreement can make a manuscript appear less polished and distract from the research itself.

2. Check Verb Tenses Carefully

Verb tense can naturally vary across a scientific manuscript, so the goal is not to make every sentence use the same tense. Instead, use tense according to what the sentence is describing.

The Methods section generally describes procedures that were performed, so past tense is often appropriate: “Samples were incubated for 24 hours.” The Results section commonly uses past tense when reporting findings: “The treatment increased cell viability.” In the Discussion, present tense may be appropriate when explaining what the findings suggest: “These findings suggest that…”

Review your manuscript for unnecessary shifts between tenses. Consistent and purposeful tense use helps readers understand when an action occurred and whether you are reporting a finding or discussing its broader meaning.

3. Review Scientific Terminology and Word Choice

Scientific manuscripts contain specialized terms, abbreviations, units, gene names, chemical names, and other technical language. These terms should be checked carefully because replacing one with a more general or familiar word can change the scientific meaning.

For example, if your manuscript consistently uses “cell viability,” do not change some instances to “cell survival” simply to create stylistic variety. In scientific writing, consistency is often more important than variation.

The ICMJE also recommends precise identification of methods, equipment, drugs, chemicals, and scientific or gene names where relevant. Before submission, review these terms and confirm that they are accurate and consistently used.

4. Check Articles, Prepositions, and Sentence Structure

Small grammatical elements such as “a,” “an,” and “the” are easy to overlook, particularly when writing in English as an additional language. Prepositions can also cause problems because their use depends heavily on context.

For example:

Less clear:
“The results were compared with previous study.”

Clearer:
“The results were compared with those of a previous study.”

Also review sentences that contain several clauses. Scientific writing often involves complex information, but the complexity should come from the science rather than unnecessarily complicated sentence construction. If a sentence contains multiple ideas, check whether each part is clearly connected and whether dividing it would make the information easier to follow. A grammar checker can help flag sentence-level issues and suggest possible improvements during this review.

5. Check Consistency Across the Manuscript

Consistency is particularly important in scientific writing because manuscripts often contain technical terms, abbreviations, measurements, and formatting conventions that appear many times.

Search for variations such as “behavior” and “behaviour,” “data set” and “dataset,” “Figure 1” and “Fig. 1,” or “pH” and “PH.” The correct choice depends on the target journal, so always follow its author guidelines.

A consistency checker can make this review easier by identifying variations that may otherwise be missed during manual proofreading. Trinka’s Consistency Checker can help identify inconsistencies in terminology, spelling, capitalization, and other writing conventions so you can review and standardize them.

6. Use a Grammar Checker for a Final Language Review

After completing your manual review, use a grammar checker for scientific writing to identify language issues you may have missed. A tool designed for academic and technical writing can be useful for manuscripts with complex sentences and specialized terminology.

Trinka Grammar Checker can help identify issues with grammar, spelling, punctuation, sentence structure, and word choice. It also supports US and UK English preferences, which can be useful when preparing a manuscript for a specific journal.

For more involved revisions, an AI Writing Assistant can also help improve sentence clarity and readability. However, suggestions should not be accepted automatically. Read each correction in context and confirm that it preserves your intended scientific meaning, particularly when technical terminology, numerical information, or levels of certainty are involved.

7. Read the Complete Manuscript One More Time

Once you have made the necessary corrections, read the complete manuscript again without focusing only on individual grammar errors. Instead, read it as a reviewer might.

Check whether the purpose of each section is clear, whether the Methods are easy to follow, whether the Results are stated precisely, and whether terminology remains consistent. Look for unclear pronouns, unnecessarily long sentences, and changes in writing style that may have been introduced during editing.

This final reading is important because automated tools can identify potential language problems, but they cannot replace your understanding of the research.

Follow the Journal’s Requirements

Grammar is only one part of preparing a scientific manuscript for submission. Journals can have specific requirements for spelling, terminology, abbreviations, formatting, references, and manuscript structure. Before submitting, review the journal’s Guide for Authors and make sure your manuscript follows its requirements.

The ICMJE also recommends following reporting guidelines appropriate to your study design. These guidelines can help ensure that important information is presented clearly and completely.

Final Thoughts

Checking grammar in a scientific manuscript is not simply about making the paper sound polished. It is about communicating your research clearly, consistently, and accurately.

A practical workflow combines manual editing with grammar and consistency tools. First, review the manuscript section by section, then check terminology, tense, sentence structure, and consistency. Use Trinka Grammar Checker to identify additional language issues and Trinka’s Consistency Checker to review variations across the manuscript. Review every suggestion in context, and finish by reading the complete manuscript once more.

This approach helps you catch language problems while keeping control over the scientific meaning of your work.