Isocyanates and Occupational Asthma

Isocyanates remain the leading chemical cause of occupational asthma worldwide. This post examines TDI, MDI and HDI exposure, sensitization mechanisms, regulatory limits, and the controls industrial hygienists should prioritize.

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Beryllium and Chronic Beryllium Disease

Beryllium is a uniquely hazardous metal that provokes an immune-mediated lung disease at vanishingly small exposures. This post examines beryllium sensitization, chronic beryllium disease, the BeLPT, and the OSHA standard.

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Legionella and Building Water Management

Legionella pneumophila thrives in engineered water systems and causes potentially fatal pneumonia. This post examines the bacterium’s ecology, ASHRAE Standard 188 water management, and the controls industrial hygienists should implement.

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