Displays the conditions under which the chromatogram was measured. Once selected, the Measurement Conditions tab will be displayed in the lower part of the Chromatogram window, containing
This sub-tab is common to all signals in given chromatogram.
The following fields in the Measurement Conditions section are designated for the information purposes only and can be filled in or left blank according to your choice.
Date and time of the end of the measurement. If the date is not accessible (e.g. in some imports), N/A will be displayed.
Name of the user who measured the analysis.
Parameters of measurement common for all signals. The remaining parameters can be found on the Method Setup - Measurement tab.
Notifies whether the Enable Autostop checkbox was used and what was the Run Time value set.
Notifies whether and by what method the external control of the measurement was defined. This corresponds to the External Start/Stop section of the Method Setup - Measurement tab (see chapter 2.5.2 on page 59 for more details).
Name of the template method used for measurement.
Specifies the range of the detector signal used. If more than one detector was used to gather data with different Ranges set (including signal units), the <varies> inscription will be displayed here.
Specifies the sampling rate of the detector used. If more than one detector was used to gather data with different Sampling Rate set, the <varies> inscription will be displayed here.
Parameters of processing method for all signals.
Name, version and date of the method used for processing.
Sets the automatic subtraction of selected chromatogram. Subtraction of the chromatogram (e.g. solvent) is indicated by the note Mathematically reprocessed in the printed report. The use of automatic subtraction is also logged into the chromatogram audit trail.
There are two places in Clarity where the subtraction chromatogram can be set - Method Setup - Advanced dialog accessible from the
If you wish to automatically subtract a chromatogram from the newly measured chromatograms, specify it in the template method in the Method Setup - Advanced dialog.
If you wish to subtract a chromatogram from an already measured chromatogram, specify which on the Chromatogram - Measurement Conditions tab (described further in this chapter).
The subtracted chromatogram is saved into the measured chromatogram, it is not simply linked to it. The changes occurring with the subtraction chromatogram thus do not influence the measured chromatogram from which the background is subtracted. The subtraction, however, does not hold its history - only last subtracted chromatogram's data is saved when it is changed, all older subtraction chromatograms are discarded.
Field specifying the file with subtraction chromatogram.
Displays the Open Chromatogram dialog used for selecting the subtracted chromatogram.
Cancels subtraction of chromatogram.
If you only wish to display the chromatogram on the background of the acquisition window without automatic subtraction, use the File - Set Background Chromatogram… command in the Data Acquisition window.
Selects the subtraction method.
Alignment of chromatograms is achieved using the biggest peaks in the subtraction chromatogram, i.e. either to the highest peak or to the peak with the largest area.
Section that contains the additional information on the sample or chromatogram.
This button serves for adding some information about the chromatogram or additional info on the sample in the Comments dialog. The button also allows to modify the comment entered prior to the analysis from the Single Analysis or Sequence dialog. This field can then be added to the report setup on the Report Setup - Results tab
Using the Show button allows to display the Chromatogram Audit Trail dialog containing the log of events happening with the given chromatogram.
This tab shows the setting of the Event Table defined in the method on the Method Setup - Event Table tab. It is common for all signals in case of the multi-detector chromatogram. More information on the Event Table is in the chapter "Event Table"
This tab shows the list of control modules (hardware) configured on the instrument and used for the acquisition of the chromatogram, along with the serial numbers of this hardware. The contents of this tab may be added to the printed reports by checking the GLP Info checkbox on the Report Setup - Method tab.
The tab displaying detailed measurement parameters. In the case of a multi-detector chromatogram there is a tab for every detector in the configuration of the Instrument.
Tab displaying the injection method of the autosampler.
Tab displaying instrument method of gas or liquid chromatograph.