- NSF Standardsearch for term
- Is a testing protocol developed by NSF. A product that has been submitted to NSF for testing will be evaluated based on this protocol. As it pertains to water, most NSF standards test the ability of a product to remove something dangerous from the water. Here are some examples of NSF Standards: NSF/ANSI Standard 58 - tests the ability of reverse osmosis systems to remove contaminants from water NSF/ANSI Standard 55 - tests the ability of ultraviolet light water systems to protect drinking water from bacteria, viruses, and cysts NSF/ANSI Standard 62 - tests the ability of water distillers to remove many harmful chemicals including arsenic and mercury NSF/ANSI Standard 44 - tests the ability of a water softener to remove hardness
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