RIHP - Registered Industrial Hygiene Professional

RIHP - Registered Industrial Hygiene Professional is a program designed to credential professionals responsible for investigating, examining and providing information to control and prevent potentially harmful conditions in the workplace, development of techniques to anticipate and control dangerous situations and participating in the development of regulations, on the government or state level, to ensure workplace and community safety.

This Test: 

  • Online Examination (link provided by email)
  • Number of questions: 100
  • Format of questions: Multiple Choice 
  • Has a time limit of: 02:00:00
  • Has a pass mark of: 75%
  • Is intended to be closed book.

Chapter #Chapter Name# of Questions% of Exam
1Introduction to the Certification 00
2History of Industrial Hygiene11%
3Basic Science and Chemistry1212%
4Analytical Chemistry55%
5Biological Hazards33%
6Air Pollution, Sampling and Monitoring1313%
10Stressors 88%
11Measurement courses and control99%
12Workplace Hazard and Risk Assessment 1717%
13Environmental Ethics 11%
Total Questions100100.00%

Read more about the certification: 
RIHP - Registered Industrial Hygiene Professional

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Exam: $ 200.00
Exam Retake: $ 100.00
Required Study Guide Materials

This is the recommended study guide for the RIHP - Registered Industrial Hygiene Professional Certification Examination.The guide covers topics such as Basic Science and Chemistry, Biological Hazards, Air Pollution, Sampling and Monitoring, Toxicology, Epidemiology and more. (271 Pages in length).

No Study Guide - $0.00
E-Book - $ 125.00

Sample Exam Questions

We provide sample questions for this exam.

Sample Questions - $40.00


National Registry of Environmental Professionals®
PO Box 2099
Glenview, IL 60025