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SPECTROSCOPY ANALYSIS OF REACTIVE RED 2 DYE<br><br>Reactive Red 2 is a<br>reactive red dye used for textile painting and printing. Before using in chemical laboratory<br>analysis, this reactive dye must be evaluated through validation methods, which consists of: linearity, specificity, precision, accuracy and stability of solutions. The aim of this study is to present co-linearity method, which is a little part of validation methods. It is graphical represented the dependence of absorbances obtained through spectroscopy analysis in visible domain (544 nm), under some values of concentrations.S
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