A Healthy Working Environment For Everyone

Occupational hygiene qualifications

The International Occupational Hygiene Qualifications form part of the OHTA International Training Scheme and Qualifications Framework.

For more information, please visit the OH Learning website


The available qualifications are listed by qualification code and title. Please click on the document links to download further information.

To find and book onto a course, please go to the Find a course page.

Foundation Level Courses

W201 - Basic Principles in Occupational Hygiene

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Intermediate Level - Core Qualifications

W501 - Measurement of Hazardous Substances (Including Risk Assessment)

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   Formative Practical Assessment Guidelines
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   Formative Practical Assessment Forms

W503 - Noise - Measurement and Its Effects

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   Formative Practical Assessment Guidelines
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   Formative Practical Assessment Forms

W505 - Control of Hazardous Substances

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  Formative Practical Assessment Guidelines
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  Formative Practical Assessment Forms

W507 - Health Effect of Hazardous Substances

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  Formative Practical Assessment Guidelines

Intermediate Level - Optional Qualifications

W502 - Thermal Environment

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   Formative Practical Assessment Guidelines
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   Formative Practical Assessment Forms

W504 - Asbestos and Other Fibres

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   Formative Practical Assessment Guidelines
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   Formative Practical Assessment Forms

W506 - Ergonomics Essentials (Including Manual Handling and DSE)

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   Formative Practical Assessment Guidelines
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   Formative Practical Assessment Forms

Professional Qualifications

CertOH - Certificate of Operational Competence in Occupational Hygiene
ICertOH - International Certificate of Operational Competence in Occupational Hygiene

Downloadsymbol  Certificate of Operational Competence in Occupational Hygiene

DipOH - Diploma of Professional Competence in Occupational Hygiene 

Downloadsymbol  Diploma of Professional Competence in Occupational Hygiene

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