CHO Certification
A Chemical Hygiene Officer is the person responsible for making a laboratory's written safety program function in daily practice.
CHO Core Study Guides
Core Study Guides for the Chemical Hygiene Officer (CHO) exam - 10 in-depth guides to help you prepare with confidence. Browse all study resources or jump straight into a guide below.
CHO Exam Domains 2026: Complete Guide to All 18 Content Areas
The Chemical Hygiene Officer credential is administered by the National Registry of Certified Chemists (NRCC).
CHO Meaning
On this site, CHO stands for Chemical Hygiene Officer. It is both a job function inside a laboratory and the name of a professional credential offered...
CHO Study Guide 2026: How to Pass on Your First Attempt
The Chemical Hygiene Officer credential is administered by the National Registry of Certified Chemists (NRCC).
CHO Training
Searches for "CHO training" usually mean one of two things: the preparation needed to pass the Chemical Hygiene Officer examination offered by the...
What Does CHO Mean?
In laboratory safety, CHO stands for Chemical Hygiene Officer. It names a role: the designated person who develops, implements, and oversees a...
What Does CHO Stand For?
On this site, CHO stands for Chemical Hygiene Officer. It is both a job function inside laboratories and, through the National Registry of Certified...
What Is A CHO?
In laboratory safety, CHO stands for Chemical Hygiene Officer: the person designated to provide technical guidance in developing and implementing a...
What Is CHO Certification?
The Chemical Hygiene Officer credential recognizes professionals who run, or are qualified to run, the chemical hygiene program in a laboratory.
What Is CHO?
On this site, CHO stands for Chemical Hygiene Officer. That is the person designated by a laboratory employer to lead the facility's chemical hygiene...
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