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'''Rhodamine''' ({{pron-en|ˈroʊdəmiːn}}) is a family of related chemical compounds, [[fluorone]] dyes. Examples are '''Rhodamine 6G''' and '''Rhodamine B'''. They are used as a [[dye]] and as a [[dye laser]] [[gain medium]].<ref>F. P. Schäfer (Ed.), ''Dye Lasers'', 3rd Ed. (Springer-Verlag, Berlin, 1990). </ref><ref>[[F. J. Duarte]] and L. W. Hillman (Eds.), ''Dye Laser Principles'' (Academic, New York, 1990). </ref> They are often used as a [[tracer dye]] within water to determine the rate and direction of flow and transport. Rhodamine dyes [[fluorescence|fluoresce]] and can thus be detected easily and inexpensively with instruments called [[fluorometer]]s. Rhodamine dyes are used extensively in biotechnology applications such as [[Fluorescence microscope|fluorescence microscopy]], [[flow cytometry]], [[fluorescence correlation spectroscopy]] and [[ELISA]].
Rhodamine dyes are generally [[toxic]], and are soluble in water, [[methanol]] and [[ethanol]].
==Rhodamine B==
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