The CIH is a voluntary, internationally recognized credential for industrial hygienists, the specialists who find, measure and control workplace health hazards. It is not required to work in Canada, but many employers value it.
Official website ↗Industrial hygiene is the science of protecting workers from health risks on the job. These risks include chemicals, dust, noise, heat, radiation and poor air quality. A Certified Industrial Hygienist studies these hazards, measures exposure and recommends ways to control them.
The CIH is issued by BGC, which was formerly known as ABIH. It is an international credential that you can earn and use in Canada. The Canadian designation for the same kind of work is the ROH, which is listed separately on this site. Some people hold both.
Holding a CIH shows employers, clients and regulators that you meet a high professional standard. It can help you move into senior roles in occupational health and safety, environmental health and safety, environmental compliance, aviation safety and dangerous goods work. It is also useful if you plan to work as a consultant or for an international company.
The CIH exam is a written, computer-based test. It covers the main areas of industrial hygiene, including how to recognize hazards, evaluate exposure, control risks and communicate findings. You must be approved by BGC before you can sit it. Many candidates study for a few months to prepare.
The CIH is not held for life. You must renew it on a regular cycle by showing that you have kept learning and staying active in the field. This is done by earning points through activities such as courses, conferences, publishing and professional work. You also pay a renewal fee. Check with BGC for the current rules.