Expert certification prep, comprehensive study guides, calculation tutorials, exam strategies, and career guidance to help you pass the CIH exam and advance your industrial hygiene career.
The definitive guide to becoming a Certified Industrial Hygienist. Covers eligibility requirements (education + experience pathways), the 180-question exam format across 16 rubrics, application process, study strategies, and career benefits. Includes timeline planning, cost breakdown, and insider tips from certified professionals.
Comprehensive breakdown of all 16 CIH exam rubrics with weighted percentages. Master Toxicology (12%), Air Sampling (11%), Ventilation (10%), and all other domains. Includes key topics, calculation requirements, study tips, and practice question links for each rubric. Features priority badges and the critical "cover all rubrics" strategy.
Complete guide to the BGC equation sheet with worked examples for every formula. Covers ventilation (Q=VA, fan laws, capture velocity), noise (dB addition, OSHA dose, TWA), heat stress (WBGT), statistics (geometric mean, confidence intervals), and radiation (inverse square law). Includes memory aids, common mistakes, and the calculator strategy.
Insider test-taking strategies from successful candidates. Master the two-pass approach for 180 questions in 5 hours, calculation shortcuts, time management (50% first pass, 33% second pass, 17% review), and exam day preparation. Includes the night-before checklist, common mistakes to avoid, and why practice questions are the #1 success factor.
Why practice questions outperform expensive $1,500 review courses—backed by cognitive science. Covers the testing effect, active recall methodology, complete 5-month study plan, and cost comparison showing how to prepare effectively for under $200. Includes success stories and the formula: 500+ practice questions = exam readiness.
Data-driven analysis of the CIH pass rate and what separates those who pass from those who don't. Covers historical trends, factors affecting success (preparation method, experience, education), the hardest rubrics, first-time vs retake statistics, and specific strategies to join the passing majority. Honest assessment of exam difficulty.
Comprehensive salary data showing CIHs earn $98,500 median with 26% premium over non-certified professionals. Breakdown by experience ($72K entry to $145K+ executive), location (Houston, SF, NYC), industry (Oil & Gas $125K, Pharma $118K), and role. Includes ROI calculator showing $400,000+ lifetime earnings benefit and 6-month payback period.
Head-to-head comparison of the two premier EHS certifications. CIH focuses on occupational health and exposure assessment (54.6% pass rate, $98.5K salary), while CSP covers safety management and hazard control (65% pass rate, $93K salary). Decision framework based on your role, career goals, and whether dual certification makes sense.
Test your knowledge with 1,000+ practice questions covering all 16 exam rubrics