OH Learning.com - advancing occupational hygiene worldwide.

Intermediate qualifications

The principal qualification at the Intermediate level is the International Occupational Hygiene Certificate

The International Certificate in Occupational Hygiene (ICertOH)

The certificate demonstrates technical knowledge and practical skills in identifying health hazards, assessing occupational exposure and testing control measures. It is suitable for technicians and technologists who carry out measurements and testing in workplaces.The qualification has been designed so that it can be recognised by national associations as contributing to their own requirements for accreditation.

Studying for the Intermediate level

You can work towards the International Certificate by studying OHTA Intermediate modules.  These are designed as 5-day taught courses that provide practical, hands-on training. Students are taught in small groups by Approved Training Providers and the courses are very interactive with workshops and exercises. 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:

Core subjects

  • W501 Measurement of Hazardous Substances
  • W503 Noise - Measurement and its Effects
  • W505 Control of Hazardous Substances
  • W507 Health Effects of Hazardous Substances

Optional subjects

  • W502 Thermal Environment
  • W504 Asbestos and Other Fibres
  • W506 Ergonomics Essentials

We anticipate that further optional modules will be developed (see the OHTA Community pages for more detail.)

Once you have completed six modules, you can progress to the award by completing a Personal Learning Portfolio. During the courses you are required to demonstrate that you can carry out basic practical assessments under the supervision of course tutors. To meet the aims of the intermediate level courses and for you to reach the required level of technical and practical skill you will continue to develop those skills through practical experience in the work environment. You will need to collect evidence which demonstrates you have applied your knowledge in practical situations. This will be documented in your Personal Learning Portfolio. Full details on completing your Personal Learning Portfolio can be found in the Qualification Guide. You should start compiling your portfolio as early as possible after completing your first OHlearning course. Once you have completed your portfolio you can apply for your intermediate level interview for the award of the International Certificate.

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, here


Other routes to the International Certificate

For students with different needs, there are alternative ways to achieve the International Certificate:

  • By taking an approved university degree course which provides exemption from studying the modules. Normally the student will still need to complete the Personal Learning Portfolio.
  • By personal application with evidence of other qualifications that are shown to have the same learning outcomes as the intermediate level international courses. The student will need to complete a Personal Learning Portfolio and may be asked to attend an interview.
Advanced, Intermediate, Foundation stepping stones image - with Intermediate selected

Prior learning

Anyone without prior training or experience of occupational hygiene is strongly advised to study the Foundation level before attempting the Intermediate modules.  To help with your decision, we suggest you review the syllabus and student manual for the Principles course.

What should I do next?