As a global leader in Industrial Hygiene, Certified Environmental Management, Ltd. (CEM) provides a wide range of innovative Industrial Hygiene services to clients in many different industries. Building on nearly two decades of experience, and combining a customer-focused approach with continual collaborative research, CEM offers information and analysis with unparalleled accuracy to ensure the health and safety of workers throughout the world. As one of the most accredited Industrial Hygiene laboratory in the world--supported by our amount of experience and commitment to excellence--our clients have always had the utmost confidence in Certified Environmental Management, Ltd.