Occupational Hygiene and Safety Technician
Board of Certified Safety Professionals·OHST
ohstexam.com is your dedicated OHST practice site: 1,000+ exam-style practice questions, organized across all 7 exam domains. Start with the free practice test — no card required.
- practice questions
- 1,000+
- exam domains
- 7
- practice test
- Free
Exam at a glance
- Exam fee
- $140 application, $300 examination, $550 bundle option, and $145 renewal fee
- Questions on exam
- Commonly listed as 200 multiple-choice questions
- Duration
- 4 hours
- Validity
- 5-year recertification cycle
Published exam facts, from the official outline.
What’s on the OHST exam
- Fundamental Math and Science and Business Calculations/Analysis (11.3%)
- Safety, Health, and Environmental Programs Including Risk Management (19.5%)
- Hazard Identification and Control (21.1%)
- Health Hazards and Basic Industrial Hygiene (15.8%)
- Emergency Preparedness, Fire Prevention, and Security (11.5%)
- Organizational Communication and Training/Education (12.6%)
- Ethics and Professional Conduct (8.2%)
Official exam blueprint domains — your practice bank mirrors this outline.
The OHST question bank follows the official exam blueprint across 7 domains, so your practice mirrors the real outline — and shows you exactly where you’re weak. See the full blueprint on ohstexam.com →
Your OHST prep is one click away
The free OHST practice test, the full 1,000+ question bank and your readiness score — all on ohstexam.com.
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