The term purifier refers to any device, appliance, chemical agent, or natural system designed to cleanse, refine, or clear a substance by removing harmful impurities, contaminants, dirt, toxins, or unwanted elements. In domestic and industrial technology, purifiers are most commonly associated with air purifiers, which filter microscopic dust and allergens out of indoor atmospheres, and water purifiers, which eliminate dissolved minerals, heavy metals, and pathogens from drinking water. The core function of any purifier is to transform a contaminated or unclean medium into a pure, safe, and healthy state suitable for human consumption, breathing, or specialized technical utilization.
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