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The Oddy test is a procedure created at the British Museum by conservation scientist Andrew Oddy〔http://www.metmuseum.org/Works_of_Art/objects_conservation/spring_2003/oddy.asp〕 in 1973,〔W.A.Oddy, "An unsuspected danger in display", Museum Journal 73, 1973, p.27-28〕 in order to test materials for safety in and around art objects. Often, materials for construction are evaluated for safety. However, though materials may be safe for building purposes, they may emit trace amounts of chemicals that can harm art objects over time. Acids, formaldehyde, and other fumes can damage and even destroy delicate artifacts if placed too close. ==Procedure== This test calls for a sample of the material in question to be placed in an airtight container with three coupons of different metals—silver, lead, and copper—that are not touching each other or the sample of the material.〔Schiro,Mara "Oddy Test Protocols" http://www.conservation-wiki.com/index.php?title=Oddy_Test_Protocols&oldid=4830 Accessed February 6, 2012.〕 The container is sealed with a small amount of de-ionized water to maintain a high humidity, then heated at 60 degrees Celsius for 28 days. An identical container with three metal coupons acts as a control. If the metal coupons show no signs of corrosion, then the material is deemed suitable to be placed in and around art objects. The Oddy test is not a contact test, but is for testing off-gassing. Each metal detects a different set of corrosive agents. The silver is for detecting reduced sulfur compounds and carbonyl sulfides. The lead is for detecting organic acids, aldehyde, and acidic gases. The copper is for detecting chloride, oxide, and sulfur compounds. There are many types of materials testing for other purposes, including chemical testing and physical testing. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oddy test」の詳細全文を読む スポンサード リンク
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