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A descaling agent or chemical descaler is a liquid chemical substance used to remove limescale from metal surfaces in contact with hot water, such as in boilers, water heaters, and kettles. Limescale is either white or brown in colour due to the presence of iron compounds. Glass surfaces may also exhibit scaling stains, as can many ceramic ...
The most common means for removing water hardness rely on ion-exchange resin or reverse osmosis.Other approaches include precipitation methods, such as fluidized bed pellet softening, [6] and sequestration by the addition of chelating agents.
An antiscalant is a chemical or pre-treatment chemical that prevents the formation of scale, or crystallized mineral salts, commonly used in water purification systems, pipelines and cooling tower applications.
A US Navy dockyard worker operates a needlegun while wearing vision, hearing, and respiratory protection. A US Navy Seaman uses a needlegun to remove old paint and corrosion aboard USS Kitty Hawk.
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