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Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA/PEL, STEL, or REL) determined by the ACGIH professional association.
Smoke inhalation is the breathing in of harmful fumes (produced as by-products of combusting substances) through the respiratory tract. [1] This can cause smoke inhalation injury (subtype of acute inhalation injury) which is damage to the respiratory tract caused by chemical and/or heat exposure, as well as possible systemic toxicity after smoke inhalation.
Inhalation is a major route of exposure that occurs when an individual breathes in polluted air which enters the respiratory tract. Identification of the pollutant uptake by the respiratory system can determine how the resulting exposure contributes to the dose.
The Chartered Quality Institute (CQI), formerly known as the Institute of Quality Assurance (IQA), is a quality management company. The CQI owns the International Register of Certified Auditors (IRCA), a certification body for auditors of management systems.
Three types of dry powder inhalers: Turbuhaler, Accuhaler and Ellipta devices. A dry-powder inhaler (DPI) is a device that delivers medication to the lungs in the form of a dry powder.
Assorted tins of nasal snuff tobacco A 17th-century snuff shop in Amsterdam Several types and consistencies of snuff tobacco. Snuff is a type of smokeless tobacco product made from finely ground or pulverized tobacco leaves. [1]
A scavenger system is a medical device used in hospitals. It is used to gather anaesthetic gases, after it is exhaled from the patient or left the area of the patient, and transport it to the atmosphere, skipping the closed environment of the operating room. [1]
A gas duster can. A gas duster, also known as tinned wind, compressed air, or canned air, is a product used for cleaning or dusting electronic equipment and other sensitive devices that cannot be cleaned using water.