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With regard to the increasing necessity for researcher to have discriminating methods. Electrochemical techniques could not easily be used alone anymore. Instruments for electrochemical studies must be able to be connected to other external instruments. Coupled with other analytical methods. Electrochemistry becomes a powerful characterizing method. For example, polypyrrol films have often and widely been studied by an electrochemical way especially the electropolymerisation process. The only use of electrochemistry is not now sufficient to explain the whole electropolymerisation process. One can easily understand the interest of coupled method in studying species with spectroscopic properties. Electrochemistry coupled with spectroscopic methods is now an usual combination of discriminating techniques for polypyrrol study. Coup领 methods often result in technical and assemb领 problems to synchronize the electrochemical experiment and the external measurement and to record external variables. These are the main user''s needs. VMP3多通道电化学工作站-16通道