Many goods essential to daily live are produced using hazardous chemicals. One result is that workers may be exposed to hazardous chemicals at their job. Monitoring these exposures can determine if action is needed to reduce or eliminate exposure. The National Institute for Occupational Safety and Health (NIOSH) has developed and rigorously evaluated over 300 methods that are available in the NIOSH Manual of Analytical Methods (NMAM). These methods describe how to collect samples and analyze them against known standards. The results can indicate whether action is needed to reduce exposure. One example of how methods can help solve workplace problems involved workers at a printing company who experienced blurry vision. NIOSH scientists talked to workers about their symptoms, and reviewed plant operations as well as the chemicals being used. After identifying the compounds most likely to cause the blurry vision, air samples were collected and analyzed using a NIOSH method. These data helped confirm that workers' symptoms correlated to exposure to a specific compound, dimethylisopropanolamine. NIOSH advised the company about steps they could take to eliminate the problem. After these changes were made, NIOSH returned a year later to confirm that workers' vision had returned to normal and that the plant air concentration was lower for that compound. This is just one example of how the 300+ methods in NMAM can help keep workers safe. Impact: The occupational safety and health (OSH) community worldwide, other countries' OSH agencies, and commercial laboratories turn to NIOSH for assistance in developing new methods, for finding solutions to monitoring occupational exposures, and for resolving analytical problems related to worker health and safety. In addition, commercial products to detect lead, beryllium, and methamphetamine have been developed that are based on NIOSH methods. These kits: Full Disclosure, BeFinder, MethAlert and MethChek, can be used on site providing a rapid indication of contamination. Once the degree of contamination is known, users can then select personal protective equipment (goggles, gloves, impervious clothing, or respirators for example) or take other actions to avoid exposure to these hazards. NIOSH works with professional organizations and regulatory agencies to provide both consultation and rigorous research that is responsive to current occupational health issues. Recognized as a leading source for reliable, accurate analytical methods, NMAM is one of the most frequently consulted and requested documents from the NIOSH Web site. These methods are accessible to people worldwide from the U.S. Government Printing Office, are located in the NIOSH Pocket Guide (https://www.cdc.gov/niosh/npg/
) and on the NIOSH Web, https://www.cdc.gov/niosh/docs/2003-154/
(or call 1-800-232-4636 for more information).