M501 – Measurement of Hazardous Substances

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  • M501 – Measurement of Hazardous Substances


Location: Face to face (Perth) & Online 
Cost: $3,300 ex GST

A separate charge for postage of course material will be calculated for all participants outside Australia. 

In partnership with:
Duration: 5 days
Unit Code: M501
All course start and finish times are subject to change. Participants will be notified of all the details prior to the commencement of the course.


You can work towards the International Certificate by studying the OHMS Training Intermediate Modules.

These are 5-day instructor-led courses that provide practical, hands-on training. Students are taught in small groups by our approved trainers and the courses are very interactive with workshops and exercises. We also cater for online participants.

Candidates will understand the techniques for assessing exposure to hazardous substances in workplace and how exposure information can be used to assess risk.

Delivery Methods

We are delighted to announce that we will now be delivering our courses remotely on the video conferencing platform GoTo, enabling students to receive the same level of technical learning as they would in the classroom.

All materials are delivered in advance to participants including those for practical assessments. Exams are also held online.


  • Describe the general approach to health risk assessment, including the role of atmospheric monitoring.
  • Select appropriate equipment to measure specific airborne contaminants and devise a suitable sampling strategy.
  • Present the results for health risk assessment purposes to comply with relevant legislation.
  • The syllabus has been structured to cover seven sections:
    • Risk Assessment
    • Air Sampling Theory and Practice
    • Air Sampling Equipment
    • Sample Analysis
    • Hygiene Standards
    • Biological Monitoring
    • Calculation, Interpretation and Presentation of Results


On completion of each module, you will receive an Award of Successful Course Completion for that module.

To obtain the International Certificate, you must complete six modules, including four core subjects and two others chosen from three options.


Occupational Hygienists who have COH status are also eligible to gain COH points for their attendance and completion of the ICertOH modules.

For each 5 day module COHs will gain 1 point per day with a total of 5 points.


International Certificate in Occupational Hygiene

The ICertOH is a British Occupational Hygiene Society (BOHS) Certificate of Operational Competence, for outside of the UK, that firstly requires the successful completion of 6 modules, other modules include.

the other core subjects:

M503 Noise – Measurement and its Effect

M505 Control of Hazardous Substances;

M507 Health Effects of Hazardous Substances;

the optional subjects:

M502 Thermal Environment;

M504 Asbestos and Other Fibres;

M506 Ergonomics Essentials.

To be awarded the ICertOH a Personal Learning Portfolio must also be completed after the 6 modules. Candidates that wish to complete a Personal Learning Portfolio will need to collect evidence that demonstrates you have applied your knowledge in practical situations. This will be documented in a Personal Learning Portfolio. Full details on completing a Personal Learning Portfolio can be found in the Qualification Guide. Compiling of a portfolio should start as early as possible after completing the first ICertOH course. Once the portfolio is completed an application can be made for an intermediate level interview for the award of the International Certificate in Occupational Hygiene.

In order to download an application form for this qualification or to read the Qualification Guide for more information, visit the web page of BOHS, the Participating Examining Body: http://www.bohs.org/membership/benefits-of-membership/professional-development/certificate-in-occupational-hygiene/ 


In the event of a cancellation, the following fees will apply:

  • Cancellation within 4 weeks of course start date: 50% of total course fee.
  • Cancellation within 2 weeks of course start date: 100% of total course fee.

AIOH Certified Occupational Hygienists

The Australian Institute of Occupational Hygienists (AIOH) has the requirement in their “Member Application Manual” that to be a Full Member that applicants must have a first degree or diploma in science or engineering acceptable to the Council, or an equivalent qualification acceptable to the Council (Section 3.2). An equivalent qualification acceptable to the Council includes the OHTA International Certificate in Occupational Hygiene (ICertOH) (Section 3.3.1). Once a full Member the applicant can become a Certified Occupational Hygienist (COH)®, assuming they meet additional criterion for experience.