Become a CPIH – Application Requirements


To qualify for application of the CPIH, an applicant must comply with all regulations of the Certification Board that are in effect at the time the application is filed. An applicant must:

  1. Be a FULL member of MIHA and
  2. Be in the current practice of Industrial Hygiene and
  3. Meet academic and professional Industrial Hygiene experience requirements supported by references OR successfully applied for and gained certification under an IOHA recognised (NAR) certification scheme and
  4. Successfully pass the CPIH Oral Examination



Figure1 : Flow path to become a CPIH

Non-members of MIHA can simultaneously apply for full membership of MIHA when applying for the CPIH certification.

All applicants must agree to adhere to the MIHA Code of Ethics and be governed by the MIHA Ethics Case Procedures available here.

When initial review of an application indicates that applicable information is not clear, supplemental information may be requested from the applicant. In that case, review of the application/reapplication will not proceed until the requested information is received.

Candidates who pass the CPIH Oral Examinations will be able to use the term “Certified Professional Industrial Hygienist” abbreviated to CPIH after their name. They may continue to do so until such time as their certification expires or is revoked.

After gaining certification, a certificate and information on the certification maintenance program shall be mailed to each new CPIH. If a certificate is damaged or lost, a replacement certificate can be supplied for a fee.


IOHA Recognized (NAR) Certification Scheme

An applicant may submit proof of a valid and good-standing professional Industrial Hygiene certification under any of the IOHA recognized (NAR) certification schemes listed on their website at the time of application.



Applicants for the CPIH shall provide evidence of:

a) Undergraduate academic qualification of a CPIH Board recognized basic degree in chemistry, physics, engineering, biology or a related discipline, AND

b) CPIH Board recognized post graduate degree in Industrial Hygiene OR has passed the following five (5) Occupational Hygiene Training Association (OHTA) courses:

  • W201 Basic Principals of Industrial Hygiene
  • W501 Measurement of Hazardous Substances
  • W503 Noise – Measurements and its Effects
  • W505 Controls of Hazardous Substances
  • W507 Health Effects of Hazardous Substances

c) AND (1) CPIH Board recognized 2-hr Ethics course

The Certification Board will consider and may accept any other degree proposed by a candidate who provides evidence of the scientific content of the curriculum. Social sciences are not considered as qualifying sciences. Evaluation of the science content of a bachelor’s degree will be made from the official transcripts. Candidates applying with qualification of Occupational Hygiene Training Association (OHTA) courses MUST complete the following three (3) OHTA courses within the first 5 years of CPIH as part of Certification Maintenance (CM) for CPIH renewal purposes:

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

Essentials All academic qualifications submitted must be recognized by the Certification Board. When further information about the content of a degree, such as course descriptions or content is required, the applicant will be requested to provide the information and review of application will not proceed until the information is received.



On top of the academic requirements above, the candidate must have at least five (5) years of experience in the professional practice of Industrial Hygiene acceptable to the Certification Board.