What is the CRBOH?

The CRBOH or Canadian Registration Board of Occupational Hygienists, is a national, not-for-profit organization, which sets standards of professional competence for occupational hygienists and occupational hygiene technologists in Canada and around the world. Registration with the CRBOH confers the right to use the title Registered Occupational Hygienist (ROH) or Registered Occupational Hygiene Technologist (ROHT), and indicates the attainment and maintenance of a high standard of professionalism.  CRBOH is an International Occupational Hygiene Association recognized Certification Board.  Slide Presentation on CRBOH CRBOH Brochure You will need the Acrobat Reader to read, download or print documents posted on this site. If you do not have Acrobat Reader installed, you may download a free copy here: