What is Certification?

The Australian Institute of Occupational Hygienists Inc. (AIOH) certifies professional occupational hygienists in Australia. A Certified Occupational Hygienist (COH) is a competent and professional person who is bound by the AIOH Code of Ethics.

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How to become a Certified Occupational Hygienist

To qualify for COH an applicant must pass an oral examination and in some cases a written examination. This written examination (if required) is sat prior to the oral examination which is held on the weekend prior to the annual AIOH conference in December each year.

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