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University of Colorado Denver

Course Mo​​dules

  • Basic Math & Science
  • Industrial Hygiene Chemistry
  • Air Pollution & Community Exposure
  • IH Control Methods
  • Regulations, Standards and Guidelines
  • Sampling for Gases and Vapors
  • Ventilation
  • Safety, Management & Ethics
  • Thermal Stress
  • Industrial Noise ​​and Noise Control
  • Calibration
  • Personal Protective Equipment and Respiratory Protection
  • Ionizing Radiation
  • Toxicology
  • Biohazards
  • Aerosol Sampling
  • Epidemiology and Biostatistics

Supported by an unrestricted education grant from Pinnacol Assurance



Welcome to CIH Online

Exam Review and Certification Maintenance Courses


CIH Online courses offer practicing industrial hygienists studying for the Certified Industrial Hygienist Exam an advantage:
  • 24-hour access to over 25 comprehensive online lectures and course materials
  • Study handouts from each lecture
  • Peer-to-peer interaction 
  • Community discussion boards
  • Instructor-led online review sessions
  • Supports graduate educate for health and safety programs
  • FREE CIHprep V9.0 CD​ (DataChem Software)
*When you sign up for CIH Online, you are directly helping to support graduate education of industrial hygiene, ergonomics, and other occupational health and safety student programs.
To learn more about the courses and to register today, CLICK HERE​!


This course was designed by experts in Industrial Hygiene who have extensive experience in teaching and tutoring industrial hygiene graduate students and professionals. The comprehensive prep course is offered 100% online. It's built to accommodate your schedule and to allow you to study in a way that works best for you!

Find out more about how we help you pass the exam

Expert Instructors

Our team of certified instructors have extensive experience in this field. Stay engaged and learn from the best.

Read about CIH Online instructors



This is the only 18-module course offered completely online to provide you with the content and strategy you need to prepare for and pass the certification exam offered by the American Board of Industrial Hygiene (ABIH).

Find out more about exam requirements


Time & Cost Savings

We know how much travel costs can add up for live prep courses. This course is designed to make exam prep easy and convenient so you can be as productive as possible and still keep up with work, home, and family.



Practice makes perfect. Apply what you've learned to practice problems provided by our partner, DataChem Software​​​​. With your registration, you have the option to receive​​ the CIHprep V9.0 CD.

Learn more about CIHprep from DataChem Software


Built for Success

Once you're registered, you will be granted 24/7 access to view lectures and print handouts for an entire year, allowing you to study for up to 2 exams if you do not pass the first attempt. The materials are designed to be self-paced so that you can view lectures at your convenience and review them as many times as you need. It is recommended that you use the resources listed for each module to supplement your exam  prep​.


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