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Spot analysis
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<p>Spot analysis, spot test analysis, or a spot test is a <a href="/facts/Chemical_test/6J3u77Ic">chemical test</a>, a simple and efficient technique where analytic assays are executed in only one, or a few drops, of a chemical solution, preferably in a great piece of filter paper, without using any sophisticated instrumentation. The development and popularization of the test is credited to <a href="/facts/Fritz_Feigl/IPyA3zD5">Fritz Feigl</a>. </p><p>Spot test or spot assay can also refer to a test often used in microbiology. </p>