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CIH Online Review

Prepare for the Certified Industrial Hygienist (CIH® ) exam with this comprehensive Bowen EHS® online review course.
Classes meet twice a week for 8 weeks.
Earn 3.2 CEUs or 32 Contact Hours
Earn an additional 0.2 CEUs or 2 Ethics Contact Hours with the Ethics Collection.

Registration and Dates

LIVE Instruction

Exam prep courses are presented LIVE online in real-time. Ask and answer questions via a chat window.

Instructor Support

Receive support from our certified instructors when you have questions, need extra help, or when you’re lacking motivation. They're here for you and happy to help YOU!

Comprehensive Materials

Our Exam Prep Courses cover the subjects you need to know and test-taking strategies that allow you to go into your exam with confidence.

The Companion Toolkit

INCLUDED with every exam prep course. Access all study question vaults, live extra help sessions, and discussion forums. The Companion Toolkit details >>

Ethics Credit

The Ethics Collection is available to you through The Companion Toolkit to earn your ethics certificate before the application due date. Earn 2 contact hours or 0.2 CEUs.

Yearlong Access

You get access to your course and supplemental resources including The Companion Toolkit from the time of your paid registration until one year after the course start date.


Lives are busy. Participate in scheduled live lectures or listen to recordings when you have the time. All course materials and tools are available 24/7 through the Bowen EHS Learning Center.


Complete the course and earn CEUs or contact hours.


Our goal is for you to pass your exam(s), and we stand behind that. Read the Bowen EHS Guarantee.

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You are not alone.
Bowen EHS Instructors and support staff are here to help, guide, and motivate you as you prepare for your OEHS certification exam.

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CIH Online Review Details



The primary purpose of the course is to provide participants with the necessary framework to pass the Certified Industrial Hygienist (CIH) exam administered by the Board for Global EHS credentialing (BGC). 

Successful completion of the course requirements is expected to result in participants’ increased ability to: (a) pass the CIH exam; (b) perform integral mathematical and scientific functions/equations; (c) identify, assess, and control workplace health hazards.


This course contains 32 hours of instruction. 3.2 CEUs are offered for this course.

As an IACET Accredited Provider, Bowen Learning Network offers CEUs for its programs that qualify under the ANSI/IACET Standard.

For certification and recertification credit, please visit How many points/credits/hours is a course worth?

Course Expectations:
  • Lectures are held two (2) times per week for 8 weeks and last 2 hours each. The lectures are conducted live and are available as recordings for streaming and download the day after the live lecture is conducted. In addition to weekly presentations, participants will be expected to complete multiple-choice quizzes.  Other practice activities may be assigned or suggested by the instructor. These activities are designed to engage participants and assist in the retention of presented information.
  • A homework password will be given at the end of each lecture. Homework will be completed outside of class and reviewed at the beginning of the next live lecture.
  • Recordings of all class lectures and access to all course activities are available for up to one full year from the course start date through the Bowen EHS® Learning Center. Mac and PC users have the option to download the recordings to keep and use after the course has closed.
Lecture NoTopic
CIH 01 Introduction
CIH 02 Mathematics and Statistics
CIH 03 Basic Science
CIH 04 Analytical Chemistry
CIH 05 Air Sampling Instrumentation
CIH 06 Radiation
CIH 07 Ventilation Part 1
CIH 08 Ventilation Part 2
CIH 09 Toxicology
CIH 10 Work Environments
CIH 11 Community Exposure
CIH 12 Ergonomics
Thermal Stress
CIH 13 Biohazards
Non-engineering Controls
CIH 14 Noise
Training and Management
CIH 15 Health Risk Analysis
CIH 16 Final Review

Course Objectives

Participants who successfully complete all course requirements will be able to:

  1. Solve basic chemistry problems.
  2. Describe basic IH analytical methods.
  3. Describe the sources and hazards of ionizing and non-ionizing radiation.
  4. Define basic toxicology terms.
  5. Define basic epidemiology terms.
  6. Describe basic IH sampling methods.
  7. Describe risk factors and control strategies associated with common MSDs.
  8. Identify Thermal Stressors and perform basic heat stress calculations.
  9. Describe the elements of a biosafety program.
  10. Describe the effects of exposure to noise and how to control it.
  11. Describe the basics of occupational exposure limits.
  12. Implement an effective exam preparation strategy.
Materials Provided
  • Course notebook with a hard copy of all lectures provided at the beginning of the course.
  • Online access to recorded lectures, virtual classroom and homework for one year from the course start date.
  • Access to The Companion Toolkit and OEHS Webinars through the Bowen EHS® Learning Center for one year or more (commencing on the date of the paid registration).
  • TI-30XS Multiview™ calculator. All in-class work will be done with this calculator.

Proprietary Interest

Bowen EHS may have a proprietary interest in the products, instruments, devices, services or materials discussed in this course.



Clients will benefit most from this course if they:
  1. determined they are eligible to take the CIH certification exam,
  2. completed an undergraduate or graduate degree in a physical science, engineering, or health and safety program, and
  3. have at least 4 years of professional experience in the health and safety field.

For more information, see CIH Certification - BGC.

Completion Requirements

To receive a certificate of completion for this course, participants are required to do the following:

  1. Listen to each of the lectures (participate live or review recorded lectures).
  2. Score 70% or higher on all homework assignments.
  3. Score at least a 70% or higher on the Bowen EHS final exam.
  4. Complete the course evaluation.

No certificate will be awarded to participants who do not meet the above completion requirements.

Computer Requirements

The Bowen Learning Network online virtual classrooms are powered by BigBlueButton. It fully supports the Windows, Mac OS X, and Chromebook platforms (see below for versions supported). Support is available for iOS (iPads) and Android Tablets. While smart phones can be used, the screens are too small to display all of the aspects of the Virtual Classroom.  For the best online learning experience, the use of a device with a larger screen is HIGHLY recommended. A physical keyboard is also recommended.




Early Payment

Discounted prices are valid until the Early Payment Discount End Date listed for each course. See courses below for dates. If the date is not listed, it has expired.

Your Current
Shipping Address
Individual Price (USD) Individual Price as a part of a group1 (USD)
In the USA, Canada,
$1 320 $1 195
Other countries $1 420 $1 295


Your Current
Shipping Address
Individual Price (USD) Individual Price as a part of a group1 (USD)
In the USA, Canada,
$1 445 $1 320
Other countries $1 545 $1 420

  1. Group - A group is made up of two or more people who decide to take the same course with the same dates. These can be friends, associates, or coworkers. Participants register and pay individually. Please choose the "with others" option and let us know who is in your group when you register. All registrations and payments must be completed within seven (7) days of the first paid registration of the group to qualify for the group discount.

Questions? Large group? Combined Invoice?   Contact Us



Course Schedule and Registration

Choose your course by using the Register now buttons below each course listing.

2024-07 CIH Review - starts July 8, 2024

Early Payment Discount End Date: Jun 23, 2024 - 11:59PM (23:59) ET USA
- payment must be received by this date
  Section 1 Section 2
Days of Week Mondays / Wednesdays Tuesdays / Thursdays
Times 8:00pm - 10:00pm (20:00 - 22:00) ET 6:00pm - 8:00pm (18:00 - 20:00) ET
Live Instruction Jul 8, 2024 - Aug 28, 2024 Jul 9, 2024 - Aug 29, 2024
Course Access until Jul 31, 2025 Jul 31, 2025

Register now - 2024-07 CIH Review View pricing

2025-01 CIH Review - starts January 13, 2025

Early Payment Discount End Date: Dec 29, 2024 - 11:59PM (23:59) ET USA
- payment must be received by this date
  Section 1 Section 2
Days of Week Mondays / Wednesdays Tuesdays / Thursdays
Times 8:00pm - 10:00pm (20:00 - 22:00) ET 6:00pm - 8:00pm (18:00 - 20:00) ET
Live Instruction Jan 13, 2025 - Mar 5, 2025 Jan 14, 2025 - Mar 6, 2025
Course Access until Jan 31, 2026 Jan 31, 2026

Registration will open by Wednesday, July 31, 2024.

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