The Certification that sets you apart.

It’s no longer enough to be certified. You need a credential that will help you stand out from the crowd. Our requirements are demanding and consequently, the CIH is held only by an elite group of professionals.

The CIH has been the gold standard for more than 50 years, attaining uncompromised integrity, global recognition and career-lasting value. View our 3.5 minute movie to learn why the CIH is the premier occupational hygiene certification in the world.