Pass the NRCC Chemical Hygiene Officer exam with the training and the practice in one place
The CHO | Chemical Hygiene Officer | NRCC Exam Test Prep Bundle pairs the best online training for Chemical Hygiene Officers with an NRCC exam prep module, for anyone who wants to become an NRCC-certified Chemical Hygiene Officer.
The National Registry of Certified Chemists (NRCC) Chemical Hygiene Officer (CHO) exam is 150 multiple-choice questions in three hours. Most of its questions ask for something exact: an OSHA section number, a definition, how often something is done, a limit. This package gives you the complete Chemical Hygiene Officer Certification Pathway to learn the material, and the NRCC CHO Exam Test Prep module to practice it the way the exam asks it.
What you get
- The complete Chemical Hygiene Officer Certification Pathway: 24 online modules covering the OSHA Laboratory Standard and the Chemical Hygiene Plan, hazard communication and safety data sheets, chemical hazards, storage, inventory, handling and waste, spills, fire safety, ventilation, personal protective equipment, eyewash stations and showers, laboratory inspections and more, with a certificate for each module you complete.
- The NRCC CHO Exam Test Prep module: built directly on the eighteen content areas NRCC publishes for this exam and on the texts NRCC recommends.
Inside the exam prep module
- A diagnostic assessment that shows which of the eighteen content areas need your attention, so your study time goes where it counts.
- Eight content-area lessons with flip cards for the exact facts the exam asks for, including OSHA section numbers, definitions, frequencies and limits, and practice questions that show the answer and its source.
- The three calculations candidates report on the exam: the time-weighted average, exposure limits and fume hood face velocity, worked step by step.
- Test-taking strategy for one-best-answer exams, and a one-page high-yield summary of section numbers, key numbers and formulas.
- A full-length practice exam: 150 questions in three hours, the same length and time as the real exam.
Why this package
- Learn and practice in one place: the full pathway teaches every area, and the prep module drills it in the exam's own format.
- Every practice question is sourced: written from OSHA's Laboratory Standard (29 CFR 1910.1450), Prudent Practices in the Laboratory (National Academies, 2011) and the Handbook of Chemical Health and Safety, never from recalled exam questions.
- Online and self-paced: study on your own schedule, not in a one-day seminar.
- One year of experience toward certification: in partnership with NRCC, the Chemical Hygiene Officer Certification Pathway counts as one year of experience toward NRCC’s Chemical Hygiene Officer certification requirements.
- Endorsed by NRCC: the pathway was developed by an NRCC-certified Chemical Hygiene Officer and reviewed and endorsed by NRCC, in partnership with NRCC.
Who it is for
- Anyone preparing for the NRCC Chemical Hygiene Officer exam.
- Chemical Hygiene Officers and Environmental Hygiene Officers, new or experienced.
- Laboratory managers, supervisors, researchers and principal investigators.
- Health and safety professionals, risk managers and school administrators.
- Science, art and technology educators who act as the Chemical Hygiene Officer for a school or district.
About the exam
Eligibility, fees and scheduling are set by NRCC; see NRCC's Chemical Hygiene Officer exam page. No preparation can guarantee a pass, and this package holds no questions from the NRCC examination.






