Hey guys, one of the most often referred to reference and study guide texts is the AIHA Industrial Hygiene Reference and Study Guide (pretty much nailed it with the name, amiright?). The reference is another quick tool for finding short explanations of key terms, brief breakdowns of equations, and refreshers on topics you’ll likely encounter during your CIH exam studying and on the exam itself. I wouldn’t say that the text is the be all, end all of study guides in industrial hygiene, but often times all you need is a quick tip to jog your memory or to put you on the right track to know where to keep looking for more information. Given the price of the book (~$85 USD), its worthwhile to have on hand, especially since the digital copy can be searched easily which comes in handy when you’re in a pinch and need to quickly move on a sticking point. You can pick up a copy directly from the AIHA here.