According to the concept of Chemotion ELN, the BagIt container, but also the original file that was generated by the device, should be assigned to the corresponding sample representation in the ELN. Both are then part of the so-called analysis description of a sample and can be used for further analysis, can be retrieved per download and can be transferred to other systems such as repositories. The manufacturers of potentiostats usually deliver advanced software for evaluation and visualization of the measurements. Therefore, the analysis of cyclic voltammetry measurements is usually done using the vendors' software. Unfortunately, the analysis software of most of the vendors is proprietary and neither available nor suitable for an embedding into open source developments, such as Chemotion ELN. To overcome limitations in the use and analysis of the CV data, the data viewer ChemSpectra , an open source, browser-based tool for data visualization and evaluation, was adapted to the use case of CV. ChemSpectra can handle either single spectra, provided in JCAMP-DX format or multiple spectra files as BagIt. Multiple files containing BagIt containers are processed by ChemSpectra to show each spectra file as a separate graph, or to show different combinations of selected files in one graphical summary. ChemSpectra was systematically extended for CV measurements to enable the work with multiple cyclic voltammograms in one plot. This involved adapting the UI to allow the selection of individual curves from a set of curves, and advanced identification options for anodic and cathodic peaks had to be developed. ChemSpectra further allows the calculation and assignment of some standardized key properties to describe and compare different curves of CV experiments. The most common properties are the correction value of the capacitive background current I𝜆0 (sometimes also isp0, currently determined graphically by the user), the current ratio ipa/ipc of a given redox-pair, and the peak separation between the anodic and cathodic peak (ΔEp) (Figure ). The selection of peaks via peak picking and the calculations depending on the choice of peaks are summarized in the information section of the UI in ChemSpectra. Additionally, the results can be downloaded as a table CSV file to allow the fast integration of the results into publications and reports (see example in SI). Step 4. Summarized metadata scheme and data file output As in most of the cases the metadata of the measurement's data file do not fully cover all details, the extracted metadata should be completed with contextual information that is available in the ELN (such as the sample name and identifiers that were used for the measurement) or with manually added information. The option to complement extracted data with additional information is of high importance in the case of cyclic voltammetry, as the information captured from the potentiostat is only one part of the study's description. The information gained from the file needs to be completed by data describing the setup, such as the type of electrodes, the measurement's conditions, and other parameters of the measurement (a list of all metadata is given in the SI). In summary, a first part of the metadata can be obtained from the extraction of the data file by ChemConverter as depicted in Figure (Figure , part 1), a second part of the metadata, such as information on the sample and the author of the data, is available from the ELN-database (Figure , part 2). A third part of the metadata is provided manually by completion of the ELN forms (Figure , part 3). In case the data files of the measurement were analyzed in ChemSpectra, a set of metadata including the key values of the analysis is generated as fourth part of the metadata and is also included in the download option for metadata (Figure , part 4). After completion of the metadata, comprehensive information is available and can be downloaded as an XLSX file to ensure that all the combined metadata is available in an easily human-readable form. For CV experiments, a typical metadata table file consists of at least three sheets. One is reserved for explanations and definitions of the file and its labels, a second one gives all metadata gained from steps 1-3, and a third one (or more sheets) are added to give the graph-related analysis data (x CV curves = 2+x sheets) (Figure ).