When you cannot cool the environment, you have to cool the worker. A look at engineering controls, work-rest regimens, and what recent studies show about phase-change and evaporative cooling vests
Carbon monoxide is colourless, odourless, and a leading cause of fatal occupational poisoning. This post covers carboxyhemoglobin toxicology, the NIOSH IDLH of 1,200 ppm, the ACGIH TLV of 25 ppm,
Ethylene oxide sterilizes roughly half of all sterile medical devices and is a confirmed human carcinogen. This post covers OSHA’s 1 ppm standard, the IARC Group 1 classification, the disputed
NIOSH Total Worker Health reframes occupational health by integrating hazard control with the broader conditions of work and well-being. This post explains the TWH framework, the Hierarchy of Controls Applied
Machine learning is reshaping how industrial hygienists model exposure, monitor PPE compliance, and interpret wearable sensor data. This post examines the methods, the peer-reviewed evidence, and the data-quality and bias
Mercury exists in elemental, inorganic, and organic forms, each with distinct toxicokinetics and exposure routes. This post reviews mercury speciation, the OSHA PEL and ACGIH BEI for urinary mercury, ATSDR
Wet-bulb globe temperature is the backbone of every credible heat standard. Learn how WBGT works, how it differs from the heat index, and how the ACGIH TLV, ISO 7243, and
An examination of how biological monitoring measures absorbed dose across all routes of entry, the role of ACGIH Biological Exposure Indices, biomarker selection and timing, and large-scale initiatives such as
Sound exposure decisions rest on defensible air sampling. This post examines exposure-assessment strategy, the sampling train, validated analytical methods, and full-shift versus task-based sampling.
Lasers and other non-ionizing optical and radiofrequency sources present distinct occupational hazards. This post reviews ANSI Z136.1 hazard classes, maximum permissible exposure, and ICNIRP guidance.
