Engineering:Low-iron glass
Low-iron glass is a type of high-clarity glass that is made from silica with very low amounts of iron. This low level of iron removes the greenish-blue tint that can be seen especially on larger and thicker sizes of glass.[1] Low-iron glass is used for aquariums, display cases, some windows, and other applications where clarity is desired.[2]
Low-iron glass typically has a ferric oxide content of about 0.01%.[1] Ordinary plate glass has about 10 times as much iron content.[citation needed] Low-iron glass is made from low-iron silica sand. In the United States, the primary sources for such sand are in Wisconsin.[3]
Fallingwater, a house designed by Frank Lloyd Wright and built in 1939, was one of the first houses to use low-iron glass for windows.[4]
Low iron glass is widely used in solar panels.
Low-iron glass is sold under various brand names. Guardian Industries calls it "UltraClear" or "Ultrawhite".[5] Pilkington calls it "Optiwhite".[6] Vitro calls it "Starphire".[7] Other brand names include "Starlite", "Krystal Klear", "Diamant" and "Eurowhite".
References
- ↑ 1.0 1.1 YANG Jing-kai; AN Xue-hui; LIU Yan-li; ZHAO Hong-li (April 2009). Analysis and Calculation of Melting Performance for the Low-iron Glass. College of Materials Science and Engineering, Yanshan University,Qinhuangdao. http://en.cnki.com.cn/Article_en/CJFDTotal-CLKX200904034.htm.
- ↑ Architects, American Institute of; Hedges, Keith E. (2017-04-10) (in en). Architectural Graphic Standards. John Wiley & Sons. ISBN 9781119312512. https://books.google.com/books?id=nosmDgAAQBAJ&q=ultra+clear+glass+used+in+aquariums%2C+display+cases%2C+some+windows&pg=PA166.
- ↑ Ketner, Keith B. (1979). Map showing high-purity silica sand of Middle Ordovician age in the Midwestern states. United States Geological Survey. https://pubs.er.usgs.gov/publication/mf1097.
- ↑ Patricia Lowry, Patricia (November 17, 2009). "Legacy fund to help Fallingwater windows". Pittsburgh Post-Gazette. http://www.post-gazette.com/ae/art-architecture/2009/11/17/Legacy-fund-to-help-Fallingwater-windows/stories/200911170287.
- ↑ "UltraWhite Low-Iron Glass". Guardian Industries. April 17, 2016. https://www.theguardian.com/GuardianGlass/glassproducts/UltraWhite/index.htm.
- ↑ "Pilkington Optiwhite™". Pilkington. April 17, 2016. http://www.pilkington.com/products/bp/bybenefit/specialapplications/optiwhite/default.htm.
- ↑ "Starphire Ultra-Clear™ glass.". PPG Industries. April 17, 2016. http://www.ppgstarphire.com/.
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