General precautionary rules ..............10 2 Installation ......................Overview ........................ 11 2.1.1 Flow chart ..................... 11 2.1.2 Connections in the 792 Basic IC ............11 Setting up the instrument ................... 13 2.2.1 Packaging..................... 13 2.2.2 Check....................13 2.2.3 Location ....................13 Attaching the accessories ..................
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System parameters for disconnected system ......72 Instrument control for connected system ........73 Time program ................74 Configuration ................76 Hardware settings ................ 76 4.3.7 System state window................78 Status messages................78 Error messages ................79 792 Basic IC...
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Page layout for printing .............. 129 Printer settings ................130 Print preview ................130 Printing ..................130 4.5.6 Miscellaneous functions ..............130 Reintegration................130 Recalibration................130 Subtraction of a chromatogram ..........131 Data compression ..............131 Invert chromatogram ..............131 792 Basic IC...
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5.2.9 Replacing the suppressor ..............153 5.2.10 Exchanging the pump tubing............. 155 Faults and malfunctions ................... 156 5.3.1 Error messages .................. 156 5.3.2 Malfunctions and their rectification ............ 156 Diagnostic tests / Validation / GLP ..............158 792 Basic IC...
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6.1.10 Electromagnetic compatibility (EMC)..........162 6.1.11 Ambient temperature ................163 6.1.12 Housing....................163 Standard equipment ..................164 Optional accessories..................167 6.3.1 Accessories for 792 Basic IC ............. 167 6.3.2 Separating columns and precolumns ..........169 6.3.3 Additional devices and cables ............175 Warranty and conformity ..................176 6.4.1...
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Rear of the 792 Basic IC ................. 4 Fig. 3: Interior of the 792 Basic IC ................6 Fig. 4: Connecting diagram for 792 Basic IC without suppressor ......12 Fig. 5: Connecting diagram for 792 Basic IC with suppressor ....... 12 Fig. 6: Connectors for capillaries................
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Coupling ......... 36,37 Connection capillary ......6 Suppressor inlet capillary Connection capillary ......6 for eluent......... 37,40 Inlet capillary for Suppressor outlet capillary detector block ......6,33,37 for eluent......... 37,40 Detector block......6,33,37 Suppressor inlet capillary for H O........36,37,40 Suppressor module ......6,37 792 Basic IC...
All components, which come into contact with eluent and sample are metal-free. The operation of the 792 Basic IC takes place via a PC connected to the RS232 interface with the help of the control and evaluation program «792 Basic IC». This PC program can be used to open prepared sys- tems for recording and evaluating chromatograms and modify them if need be.
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1 Introduction The operating software for the 792 Basic IC meets all the requirements you could place today on a modern integration software: single or multi- point calibration, internal or external standard, selectable algorithms for non-linear calibration, various integration modes with integration pa-...
POWER 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 Fig. 1: Front of the 792 Basic IC 1 1 1 1 3 3 3 3 Door to interior Feedthrough for syringe tubing for connection of the 6.2816.020 syringe...
= 50-60 Hz S = 100 VA Service only Fuse 100-120V: 1,0A(T) 220-240V: 0,5A(T) RS 232 Detector Block Made by Metrohm Herisau Switzerland Fig. 2: Rear of the 792 Basic IC 792 Basic IC...
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9 9 9 9 9 9 9 9 Detachable rear panel Connection access to upper part of inner To be used only for Metrohm Service! compartment Transport security screws Serial number to secure the pump head when the...
1 Introduction 1 1 1 1 POWER 28 27 45 44 Fig. 3: Interior of the 792 Basic IC (with permanently attached accessories and 1.733.0110 Detector block) 792 Basic IC...
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L = 13 cm Connection capillary 4 4 4 4 5 5 5 5 Mounting pin PTFE capillary for connection of the for attaching the tubing cartridges 6.2816.020 syringe, length L = 70 cm Purge valve 792 Basic IC...
1.3.1 Organization These 8.792.1003 Instructions for Use for the 792 Basic IC provide a comprehensive overview of the installation, startup procedure, opera- tion, fault rectification and technical specifications of this instrument. The Instructions for Use are organized as follows:...
Caution This symbol marks important information. First read the associ- ated directions before you con- tinue. Comment This symbol marks additional information and tips. 792 Basic IC...
Safety notes 1.4.1 Electrical safety While electrical safety in the handling of the 792 Basic IC is assured in the context of the specifications IEC 1010-1 (protection class 1, degree of protection IP20), the following points should be noted: Mains connection...
2.9 sect. 2.9 2.1.2 Connections in the 792 Basic IC The two following illustrations show the internal connections in the 792 Basic IC in schematic form. The meanings of the various numbered components are given in the detailed illustrations and descriptions in sections 2.2 –...
2.3.1 Connection of detector block The metal-free 1.732.0110 Detector block belongs to the scope of de- livery of the 792 Basic IC; it must be inserted in the instrument and con- nected up. Proceed as follows: Note the cell constant The cell constant c = XX,X /cm is printed on the rear of the detector block.
38 in one of the openings 5 5 5 5 and the outlet capillary in one of the openings 7 7 7 7 of the rear panel 9 9 9 9 . Replace rear panel 9 9 9 9 and screw to the 792 Basic IC using the four knurled screws 8 8 8 8 .
IC. This filter unit serves to avoid contamination by abrasive particles of the piston seals. The two other filter units PEEK supplied with the 792 Basic IC are in- stalled between the pump tubings of the peristaltic pump and the inlet capillaries for regeneration and rinsing solution (see section 2.8.2).
2.4.1 Setting the mains voltage Before switching on the 792 Basic IC for the first time, check that the mains voltage set on the instrument (see Fig. 8) matches the local mains voltage. If this is not the case, you must reset the mains voltage...
(see Fig. 8). 2.4.4 On/off switching of the instrument The 792 Basic IC is switched on and off using mains switch 11 11. When the instrument is switched on, the mains pilot lamp 2 2 2 2 lights up. 792 Basic IC...
Software installation The PC program «792 Basic IC 1.0» is required for the operation of the 792 Basic IC; this is contained on the 6.6045.003 CD included in the accessories. This program runs under Windows 95, Windows 98, Win- dows NT and Windows 2000 operating systems and is installed as fol-...
2.5.3 Basic settings When the program is started for the first time several basic settings must be made for the 792 Basic IC. Proceed as follows: Start program Double-click the software icon to start the program. The program window with the opening picture is opened and the...
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COM1 menu item to open a window listing all available COM Change ports at the PC. Select the desired COM port to which the 792 Basic IC has been connected and click on . The window is closed. <OK> Close the...
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Hardware Hardware settings In the field enter the cell constant which is Cell constant printed on the 1.732.0110 Detector block (see section 2.3.1). Click on to close the window and save the settings. <OK> 792 Basic IC...
6.2620.150 Pulsation dampener MF is recommended. It has to be installed between the high-pressure pump and the injection valve of the 792 Basic IC as follows (see Fig. 9): Install pulsation dampener Position the pulsation dampener 52 52 in the interior of the 792 Basic IC on the base.
L = 24 cm Injection valve Pulsation dampener (6.2620.150) Connection capillary Connection to injection valve PEEK capillary, length L = 13 cm Filter unit PEEK (6.2821.100) Connection to purge valve Connection capillary PEEK capillary, length L = 13 cm 792 Basic IC...
Basic IC. Pull the aspirating tubing sufficiently far into the interior of the 792 Basic IC and push at least 5 mm of it onto aspirating capillary 32 (see Fig. 3) of the high-pressure pump (it may be necessary to use em- ery paper).
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2 Installation Set flow rate to 2 mL/min Double-click the 792 icon in the system window to open the window for manual control of the 792 Basic IC (see below). Set the flow rate to in the field. 2 mL/min...
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<Off> IC pump pressure pump. Reduce flow rate Reset the original flow rate under (e.g. Flow 0.2 mL/min Click to send this value to the 792 Basic IC. <Send to unit> 792 Basic IC...
The use of easily exchangeable precolumns protects the separating columns and prolongs their lifetime. The precolumns available from Metrohm (see section 6.3.2) are either real precolumns or precolumn cartridges, which are used together with the 6.2821.050 Twin cartridge holder or the 6.2828.110 Precolumn cartridge holder.
If necessary, modify to the value suited for the Flow rate inserted separating column and click on <Send to unit> send this value to the 792 Basic IC. Switch on high-pressure pump ( ) by clicking IC pump <On> rinse precolumn with eluent for ca. 10 min.
If necessary, modify to the value suited for the Flow rate inserted separating column and click on <Send to unit> send this value to the 792 Basic IC. Switch on high-pressure pump ( ) by clicking IC pump <On> rinse precolumn with eluent for ca. 10 min.
Anion columns without suppressor 100 L In the 792 Basic IC, the 6.1825.210 sample loop (20 L, PEEK) is in- stalled. If desired, the built-in sample loop can be replaced by one of the sample loops available as an option (see section 6.3.1).
If necessary, modify to the value suited for the Flow rate inserted separating column and click on <Send to unit> send this value to the 792 Basic IC. Switch on high-pressure pump ( ) by clicking IC pump <On> rinse column with eluent for ca. 10 min.
2.7.8 Installation of the separating column with suppressor For operation of the 792 Basic IC with suppressor module, the IC sepa- rating column is first connected to the injector or precolumn. The con- nection to the suppressor module and the detector block is described in section 2.8.
½ h with eluent, regeneration and rinsing solution. 2.8.2 Preparation of the peristaltic pump Before start-up the accessories for the 2-channel peristaltic pump built into the 792 Basic IC must be mounted according to Fig. 13. Proceed as follows: Attach pump tubings Loosen both tubing cartridges 40...
Pump tubing (6.1826.060) for H Contact pressure lever Pump tubing (6.1826.060) for H Snap-action lever Stopper (white-yellow) PEEK compression fitting Coupling (6.2744.110) (6.2744.010) Aspirating tubing for H Suppressor inlet capillary for H Aspirating tubing for H Suppressor inlet capillary for 792 Basic IC...
Insert the free end of aspirating tubing 69 69 into one of the openings 5 5 5 5 of the 792 Basic IC (see Fig. 2) and pull it suffi- ciently far into the interior. Mount a coupling 70 70 (6.2744.030) to the inlet end of the rear...
Insert the free end of aspirating tubing 68 68 into one of the openings 5 5 5 5 of the 792 Basic IC (see Fig. 2) and pull it suffi- ciently far into the interior. Mount a coupling 70 70 (6.2744.030) to the inlet end of the front...
79 marked with "Waste" of the suppressor module 39 39 from below through one of the openings 6 6 6 6 out of the inner compartment of the 792 Basic IC. Lead outlet capillary 79 79 to a sufficiently large waste container and fix it in place.
2.9.1 Putting into operation without suppressor Before sample solutions can be injected at the 792 Basic IC (without use of the suppressor), the entire system must be tested for leaks and then conditioned with eluent until the baseline is stable. Proceed as fol- lows: System öffnen...
2.9.2 Putting into operation with suppressor Before sample solutions can be injected at the 792 Basic IC (with use of the suppressor), the entire system must be tested for leaks and then conditioned with eluent until the baseline is stable. At the same time, the suppressor module must be conditioned.
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41 upwards until it clicks once more to obtain optimal contact pressure. Check for leaks Check all capillaries and their connections in the 792 Basic IC for escaping liquid. If eluent escapes anywhere, the appropri- ate compression fitting must be tightened further or changed.
3.1 Requirements Operating tutorial This section introduces you to the operation of the 792 Basic IC by means of a brief operating tutorial which describes the basic operat- ing steps needed for the recording of an ion chromatogram using one of the system files supplied.
2. In what follows, the most important points for the installation are described once again (for details, see the sections mentioned). Install 792 Basic IC Setting up instrument section 2.2 Installing and connecting detector block section 2.3.1...
In the description of the calibration procedure, it is assumed that the PC and 792 Basic IC are not in operation and that the system must first be conditioned again. If this is not the case (e.g. if you start the tutorial immediately after conditioning) then you can skip steps 1 to 5.
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In the present example the integration only starts after a delay period Delay = 3.3 min Select the desired sensitivity using the cursor keys < > or < >. In the chromatogram window the following display is seen, for example: 792 Basic IC...
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File / Open / Chromatogram dow. Select the chromatogram file just recorded and *.chw click on . The chromatogram window is opened where <OK> the found peaks are numbered and the baselines are drawn 792 Basic IC...
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If required (e.g. if the fluoride peak is not detected), change the time delay before starting peak integration. Delay Click on . The window is opened <Apply> Integration parameters and the chromatogram is reintegrated. 792 Basic IC...
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This is done Time by clicking on the chromatogram and moving the cursor with the aid of the cursor keys < > and < > to the middle of the peak and reading off the corresponding retention time in 792 Basic IC...
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Enter this value (rounded off if necessary) into column. The optimized table could, for example, Time then appear as follows: 15 Start calibration Click the button in the component window. <Concentrations> Click on . The following window appears: <Calibrate> 792 Basic IC...
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Changes in *.chw. Modified: Calibration. Save changes? Click on . A window appears with the message <Yes> *.chw already exists. Overwrite? Click on . A window appears with the message <Yes> Method dual1_S.mtw was modified. Save changes? Click on <Yes> 792 Basic IC...
Fill sample loop Immerse the aspirating tubing 23 23 in the vessel containing the drinking water sample. Using the syringe fixed to the syringe tubing 25 25, siphon in ca. 1 mL drinking water. 792 Basic IC...
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File / Open / Chromatogram dow. Select the chromatogram file just recorded and *.chw click on . The chromatogram window is opened where <OK> the found peaks are numbered and the baselines are drawn 792 Basic IC...
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Print File window. The standard printing window is opened where printer, printing range and number of copies can be selected. After confirmation with the results including the <OK> chromatogram are printed out. 792 Basic IC...
Operation This section describes the most important points concerning the operation of the 792 Basic IC. For further details, please refer to the on-line help in the PC program, which can provide you with the required information rapidly and conveniently from any place in the program.
The calibration method that is mainly used in ion chromatography is the external standard calibration (absolute calibration); calibrations with an internal standard (relative calibration) or tabulated calibrations are also possible. 792 Basic IC...
4.1.3 Overview of program windows The «792 Basic IC» program consists of different windows whose func- tionality is linked together. The different windows are: Main program window for file administration, 792 BASIC IC...
4 Operation 4.1.4 Main window elements The elements of the main window are the menu bar, the 792 BASIC IC tool bar and the status bar, indicating prompts and logged-in user. Menu bar Toolbar Status bar Prompts, information Logged-in user 4.1.5...
Help Lock system Opened system 4.1.6 Overview of file types The following file types are produced by the «792 Basic IC» software: Batch reprocessing file *.bar This binary file contains data of the batch reprocessing queue. The file is stored automatically in the fol- *.bar...
[ Shift ] + [ down ] Reduces a distance between channels of a chromatogram. [ 0 (Zero) ] Adjusts a zero on the last point of a chroma- togram (running chromatogram) or its lowest level (finished run). 792 Basic IC...
Green texts can be clicked to jump to a different Help topic. Violet texts identify the dialog item, parameter or button in the corresponding window. Blue texts identify titles and important information. 792 Basic IC...
Save fonts configuration 4.2.2 Security system The «792 Basic IC» program has a security system based on the list of users. Every user has his unique password and one of the following ac- cess levels: Restricted access to program functions. Allows...
This user name stamps all methods, chromatograms and reports. It is possible at any time to change the user with the menu item 792 BASIC IC / Options / Lock system 4.2.3 Global settings 792 BASIC IC / Options / Global preferences This window is used for global program settings.
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<OK> Units for chromatograms: Chromatogram units Unit for flow rate: Flow L/min mL/min Unit for pressure: Pressure Switch on/off printing via print spooler. Switch Print via print spooler off this option if you use a GDI printer. 792 Basic IC...
Default colors for chromatographic windows <Default colors> (details see section 4.5.3). 4.2.4 COM port 792 BASIC IC / Options / 792 Basic IC:COM1 This menu item opens the window for COM port (serial RS232 in- Links terface) selection and settings.
A system window is opened with 792 BASIC IC / File / Open / System the selection of the desired system file. It contains icons for PC, Watch window (screen) and 792 Basic IC, and two buttons to start and stop a determination. Start/Stop buttons...
SYSTEM / Control / Shutdown hardware High-pressure pump and peristaltic pump at the 792 Basic IC are im- mediately stopped. A running determination is also stopped.
The system report includes the name of the method linked to the system, the configuration settings for the 792 Basic IC, the system startup val- ues and the time program (incl.
The watch window icon is one of the components of the win- SYSTEM dow. If the system is connected and this icon is clicked with the right mouse button, the following menu item appears: Open the for live display of conduc- Open WATCH WINDOW tivity and pressure: 792 Basic IC...
Injection valve in "INJECT" position "FILL" position The instrument icon for the 792 Basic IC is one of the components of window. If the system is connected, the icon contains two SYSTEM buttons for manual control of the injection valve: Switch injection valve to "INJECT"...
For a connected system, the tab is displayed. It allows manual Control control of the 792 Basic IC functions and setting of startup values to be sent to the instrument. This tab shows the current measurement values for conductivity and pressure.
Stop peristaltic pump. <Off> The system startup values are sent and applied System startup values to the 792 Basic IC each time the system is connected, a determination is started, or the values are sent manually with <Send to unit>...
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The flag RESET is used to reset the parameters to the system startup values. Suppressor Switch suppressor module to the next position Peristaltic on, off Switch on or off the peristaltic pump. 792 Basic IC...
4 Operation Configuration tab in the system settings window contains configura- Configuration tion settings for the 792 Basic IC. Selection of the method with or without sup- Method pressor: method with suppressor With MSM method without suppressor Without MSM Suppressor module:...
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Alarm stops for which the 792 Basic IC is stopped immediately. At an alarm stop, high-pressure pump and peristaltic pump are stopped immediately; the running determination and the active sample queue are also stopped.
SYSTEM STATE opened. It shows status and error messages for this system. Messages concerning the 792 Basic IC hardware are followed by [792 Basic IC] messages concerning the loaded system are followed by ["folder"]...
4.3 Systems Error messages Detection of hard- Bad connection between PC and 792 Basic IC or ware failed instrument switched off (check connecting cable or switch on instrument). Program checksum wrong (call Metrohm service). RAM faulty (call Metrohm service). E200 Invalid instrument adjustment (call Metrohm service).
) at the end of the name indicates that the method has been changed since the last saving. 792 BASIC IC / File / Save / Method Save the method of the current chromatogram in a method file ( ) in *.mtw...
Name of the detector (read-only). Detector Number of the current run starting from the very first one. All runs are automatically numbered by the system. 792 Basic IC...
Amount Concentration of the internal standard compo- Internal standard amount nent for relative concentration calculations. Date and time of sample collection (the default Date/time when... values are equal to the date and time when the chromatogram starts). 792 Basic IC...
. It is calculated by the system in accor- ear flow dance with the settings defined on Method setup / Math Precolumn Internal diameter of the precolumn in mm. Length of the precolumn in mm (set length to 0 Length if no precolumn is used). 792 Basic IC...
Comment of passport for entry of free-text user comments into the Comment chromatogram description. Use this feature to enter any additional in- formation about the chromatogram not included in other sections of the method. 792 Basic IC...
New comment logged-in user are automatically added. Clear all GLP messages and add a new GLP <Clear> comment. Text can be entered in the New com- window, date/time and logged-in user are ment automatically added. 792 Basic IC...
All this entries are stamped automatically with date and time of the entry and cannot be cleared. Add a new GLP comment. Text can be entered <Add new> in the window, date/time and New comment logged-in user are automatically added. 792 Basic IC...
4.4 Methods 4.4.3 Method setup 792 BASIC IC / Method / Method setup This menu item opens the window that includes the most Method setup common parameters for data acquisition and evaluation of the method and consists of the following tabs: General information on determination.
Asymmetry is set. Formula set Custom formulae Selection of calculation formula for the calcu- Formula lation parameter selected for . With Parameter the following settings are rameter = Formula set possible: Formula setting by customer. Custom formulae 792 Basic IC...
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The index scale is constructed on the basis of Internal the current chromatogram. All components used for index scale calibration should be pre- sent in the current sample. The index scale is constructed based on an- External other standard chromatogram. 792 Basic IC...
Setup Integration events. Events The «792 Basic IC» software includes a built-in automatic integration algorithm to detect peaks on the chromatographic curve and to evalu- ate them using calculated baselines. The integration procedure is tuned by the integration parameters on the...
The value of the first derivation (slope) of the curve is divided by the baseline noise (which is estimated using a special algorithm) and the result is compared with the threshold Slope value. Reasonable range of parameter is Slope 0.5...25. Entry range: 0.1 400 792 Basic IC...
Edit the selected event. <Modify> Delete the selected event. <Delete> Accept integration parameters and perform re- <Apply> integration. If an integration event is added or modified, the Edit integration event window is opened where the following parameters can be set: 792 Basic IC...
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Enable valley-to-valley Disable valley-to-valley Disable perpendicular drop peak separation. All Enable valley-to-valley peaks are considered to be baseline-separa- ted. The bottom of the valley becomes the baseline point. Enable perpendicular drop peak separation Disable valley-to-valley (default setting). 792 Basic IC...
(standards). For each calibrated component a calibration curve is constructed as a result. With the 792 Basic IC three different procedures can be used for the construction of the calibration curve. By far the most important method for ion chromatography is the external standard calibration (absolute calibration) that is described in detail in this section.
Q vs. response R) and outputs the calibration func- tion W(R) used for prediction of the component quantity Q = W(R Subscript values used: Stands for j-th calibration level run. Stands for standard component. Stands for component number. 792 Basic IC...
V': ) / V' Component table 792 BASIC IC / Method / Calibration / Components If the component table is opened, the chromatogram window is split into two parts. The upper one shows the chromatogram, the compo- nent table appears in the bottom part of the screen. When moving into the component table, a special cursor in the upper part of the window jumps to the peak corresponding to the current component.
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(coefficient k of the calibration formula). Minimum (Maximum) concentration value for min C (max C) the component. Components whose concentration leaves the range are marked in the min C max C peak table by the sign " ". 792 Basic IC...
) is then Name unknown used for all peaks for which no component can be allocated. Peak identification 792 BASIC IC / Method / Calibration / Identification Selecting this menu item or clicking on in the component <Identification> table opens the...
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Information on the component with the worst Worst case... (largest) deviation of actual and expected reten- tion time. Deviation is given as a part of com- ponent’s identification window. Average relative deviation Relative deviation averaged for all components. 792 Basic IC...
4 Operation Concentration table 792 BASIC IC / Method / Calibration / Concentrations Selecting this menu item or clicking on in the compo- <Concentrations> nent table opens the window with the concentration table Concentrations containing concentrations of all components for all...
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Delete the current calibration level (where cur- <Delete> sor is situated) from the concentration table. Calibrate the current chromatogram with the se- <Calibrate> lected calibration level. The following window appears: Calibration level to be used for recalibration. Level 792 Basic IC...
4 Operation Calibration curve 792 BASIC IC / Method / Calibration / Graphs Selecting this menu item or clicking on in the component table <Graphs> opens the window. Component In this window the results of the calibration are shown for each compo- nent together with the calibration curve.
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Tabulated calibration plified method of external standard calibration. If this checkbox is marked then the correspond- Local ing parameter is valid for the current compo- nent only. Otherwise, this parameter is global (i.e. default for all other components). 792 Basic IC...
Internal standard calibration Tabu- method (details see on-line lated calibration help). Update calibration 792 BASIC IC / Method / Calibration / Update Selection of this menu item opens the window. Update Replace the expected retention times of the Retention time components with the retention times of the cor- responding peaks obtained in the current run.
This run Load and save calibration data 792 BASIC IC / Method / Calibration / Load from method Load the calibration from the method. This option is used to update the calibration for the current run by the one taken from the method used for acquisition.
4 Operation 4.4.6 Report output Report options 792 BASIC IC / Method / Report options 792 BASIC IC / Process / Make report window is divided into several regions that combine Report options parameters for report output on their functionality and includes several different areas.
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Coef S/cm). Estimated baseline noise value of the channel Noise in ADC conversion units (bits). Not used for 792 Basic IC. Shift Report destination The following output devices can be selected simultaneously in any combination as targets for report output: Output report (without curves) to screen.
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For this proce- dure, a must be selected Standard component and the concentration of this internal standard must be entered in the field. Concentration of std 792 Basic IC...
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(corresponding to the universal component) are included, but missing compo- nents are not listed. Missing components are always included into By components the report, even those with concentration equal to zero. In the case of presence of universal 792 Basic IC...
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WMF *.wmf format under the same name. The two options (overwrite the file) or Mode Overwrite (append to existing file) are available. Append 792 Basic IC...
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) to the void time of the system t (t - t = (t ) / t Total for this column is equal to the capacity factor of the last peak of the chromatogram. 792 Basic IC...
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Peak asymmetry A is calculated at of the asymmetry peak height as a ratio of width after the top of the peak w to the width before the top w Coefficient k of the calibration curve. response factor 792 Basic IC...
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Group table. Linear or logarithmic retention index for identi- index fied components. Total value for the column is a weighted index average with absolute concentration as weight. 792 Basic IC...
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(horse) in this case. The complete component type may look like: BBD : !R Number of the group for the component. group Not used for 792 Basic IC. spectral ratio Name of the component. name File name of chromatogram. This column is file name very useful for processing of exported data.
A chromatogram can be scaled with the help of keyboard or mouse functions or through the window opened with Chromatogram axes . Some of the window BASIC IC / View / Appearance / Chromatogram axes control functions are collected in the menu. Window 792 Basic IC...
4.5 Chromatograms 4.5.2 Chromatogram file handling Open chromatogram 792 BASIC IC / File / Open / Chromatogram Load an existing chromatogram file ( ) from the directory and *.chw Data open the chromatogram window. The following window appears: Filename (common wildcards as Filename possible).
Delete selected chromatograms and move <Delete> them to the Windows wastebasket. Save chromatogram 792 BASIC IC / File / Save / Chromatogram Save the selected chromatogram in a chromatogram file ( ) in the *.chw working directory. If this chromatogram has been already stored in this directory, the message appears.
Export the selected chromatogram in the AIA format (Analytical Instru- ment Association) as CDF file ( *.cdf 792 BASIC IC / File / Export / Raw data to txt Export chromatographic raw data into an ASCII text file ( ). The fol- *.txt...
In order to have the same appear- ance after reopening the chromatogram, it must be saved explicitly after modification of these parameters with 792 BASIC IC / File / Save / Chromatogram Chromatogram axes of the...
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Labels Appearance and baseline drawing. Peak labels No peak labels. None Peak number. Peak number Retention time. Retention time Name of the component. Component name Component name + Quantity Name and quantity of the component. 792 Basic IC...
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If is selected, total all chromatograms are added and the resulting addition curve is shown. Select all chromatograms in the selection win- <Show all> dow. Deselect all chromatograms in the selection <Hide all> window. 792 Basic IC...
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Set colors in the selected chromatogram win- <Load defaults> dow to the set defaults colors. Save color settings in the selected chroma- <Save defaults> togram window as default colors. 792 Basic IC...
4 Operation Other graphical functions 792 BASIC IC / View / X full scale By selecting this menu item or pressing [ Ctrl ] + [ Home ] the X axis is scaled so that the chromatogram perfectly fits the window horizontally.
[ Delete ] 792 BASIC IC / Peak / Delete peak Delete selected peak. 792 BASIC IC / Peak / Select nearest point Move the cursor to the nearest start, top, end, or valley point and select the peak. 792 BASIC IC / Peak / Select start point Move the cursor to the beginning of the nearest peak and select the peak.
4 Operation 792 BASIC IC / Peak / Select end point Move the cursor to the end of the nearest peak and select the peak. 792 BASIC IC / Peak / Select valley point Move the cursor to the valley of the two nearest peaks.
4.5 Chromatograms 4.5.5 Printing Page layout for printing 792 BASIC IC / File / Page layout The selection of this menu item or clicking on in the <Page...> Report op- window opens the window for page layout parameters. tions Page layout Selection of length units.
4 Operation Printer settings 792 BASIC IC / File / Printer setup By selecting this menu item the window is opened where PRINT SETUP printer, paper size and format can be defined. Print preview 792 BASIC IC / File / Preview...
4.5 Chromatograms Subtraction of a chromatogram 792 BASIC IC / Process / More / Subtract This menu item opens the window allowing the Subtract chromatogram subtraction of any opened chromatogram from the active, selected chromatogram. Select the chromatogram that should be subtracted, click on <Subtract>...
*.bar Data 4.6.1 Batch reprocessing queue file handling Open batch reprocessing queue 792 BASIC IC / File / Open / Batch reprocessing Load an existing batch reprocessing file ( ) from the directory *.bar Data and open the window.
4.6 Batch reprocessing 4.6.2 Perform batch reprocessing Reprocess options window 792 BASIC IC / File / Open / Batch reprocessing 792 BASIC IC / File / Open / Last batch These two menu items are used to open the window, in...
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If this option is switched off, the calibra- tion curve stored in the first chromatogram re- mains active. Each further calibration chroma- togram in the batch reprocessing queue adds a new point to this calibration curve. 792 Basic IC...
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<Edit report options> Open the window for modification Report options of the report settings. Start reprocessing. <Reprocess> Combine all chromatograms of the batch re- <Merge> processing queue into a single multi-channel chromatogram. Close the window. <Close> Reprocess 792 Basic IC...
[ Shift ] + [ ] and decreased by pressing [ Shift ] + [ The chromatogram axes, labels and colors can be set in the Appearance window. The multi-channel chromatogram can be saved with File / Save / Chroma- togram 792 Basic IC...
Calibration level (see section 4.4.5) for the sam- Calibration level ple: Level stays for normal analysis, levels and greater for calibration runs. Correct filling of this column enables to calculate calibration coefficients automatically. 792 Basic IC...
QUEUE EDITOR / File / Save & Exit Save the modified batch reprocessing queue and close the QUEUE EDI- window. QUEUE EDITOR / File / Exit Close the batch reprocessing window without saving the QUEUE EDITOR modified batch reprocessing table. 792 Basic IC...
Separating columns Separation efficiency The attainable quality of analyses with the 792 Basic IC depends to a large extent on the separation efficiency of the column used. When pur- chasing an IC column you should ensure that the separation efficiency suffices for the analysis problems at hand.
If the separation properties of the column have deteriorated, it can be regenerated in accordance with the column manufacturer’s specifica- tions. With the separating columns available from Metrohm (see sec- tion 6.3.2), the instructions for regeneration can be found on the leaflet enclosed with every column.
2.9.2. If the pump is to remain switched off for a lengthy period of time the tubing cartridges 40 40 should be raised completely by loosening the snap-action lever 43 43 on the right-hand side (the set contact pressure remains unchanged). 792 Basic IC...
(see section 2.8.2). Operation The Metrohm Suppressor Module MSM comprises a total of 3 sup- pressor units which are in turn used for suppression, regenerated with sulfuric acid and rinsed with water. To record every new chromatogram under comparable conditions, work is normally carried out with freshly regenerated suppressor.
1.4.1. Maintenance by Metrohm service Maintenance of the 792 Basic IC is best done as part of an annual ser- vice performed by specialists from the Metrohm company. If work is frequently performed with caustic and corrosive chemicals, it may be necessary to shorten the interval between servicing.
6.1010.000 IC Cation column METROSEP Cation 1-2. 5.2.4 Shutdown If the 792 Basic IC is shut down for a considerable length of time, the entire IC system (without column and suppressor) must be rinsed free from salt with methanol/water (1:4) to avoid crystallization of elu- ent salts with the corresponding subsequent damage.
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Switch on high-pressure pump and rinse column with eluent for ca. 10 min, then switch off pump. Connect column to detector block Screw outlet end of separating column 66 66 to inlet capillary 37 or suppressor inlet capillary 75 792 Basic IC...
This is screwed into the seal 89 89, which can then be pulled out (see Fig. 17A). When the special tool 93 93 is screwed into the piston seal 89 89 the latter is completely destroyed! 792 Basic IC...
Screw holder for valve Spring (6.2824.060) for auxiliary piston Piston cartridge (4.709.0760) Special tool (6.2617.010) to remove the piston seal 89 Piston guide sleeve (4.709.4380) Special tool (6.2617.010) to install the piston seal 89 Sapphire supporting ring (6.2824.030) 792 Basic IC...
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90 is installed instead of the outlet valve 91 91 , an extreme pressure buildup occurs within the working cylinder, which is not detected by the pressure transducer and will destroy the piston seal 89 89 ! 792 Basic IC...
Sapphire sphere Ceramic holder for sapphire sphere The large recess must point in the direction of the sapphire sphere Seal The larger opening must point outwards Fig. 18: Components of inlet valve 90 and outlet valve 91 792 Basic IC...
Regenerate suppressor Connect the inlet capillary 78 78 marked "H " to the inlet capillary 18 18 using coupling 26 26 (see Fig. 9 and Fig. 14). This connects the suppressor module directly to the high-pressure pump. 792 Basic IC...
75 of the suppressor module 39 from the separating column 66 66 (see Fig. 14). Disconnect output capillary 76 76 from inlet capillary 37 Disconnect inlet capillaries 77 77 and 78 78 from the filter units 28 (supply from peristaltic pump). 792 Basic IC...
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(do not use tools). Connect and condition the suppressor Reconnect the suppressor to the IC system. Before switching the suppressor to the next position for the first time, rinse all 3 suppressor units with solution for 5 min. 792 Basic IC...
102 from suppressor holder 105 105. Pull out connection piece 103 103 and suppressor rotor 104 104 from suppressor holder 105 105 (the connection piece and the rotor normally stick together). Loosen connection piece 103 103 from suppressor rotor 104 104. 792 Basic IC...
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(do not use tools). Connect and condition the suppressor Reconnect the suppressor to the IC system. Before switching the suppressor to the next position for the first time, rinse all 3 suppressor units with solution for 5 min. 792 Basic IC...
Switch on peristaltic pump. Press contact pressure lever 41 41 upwards until the solution just starts to be drawn in. Then press contact pressure lever upwards until it clicks once more to obtain optimal contact pressure. Switch off peristaltic pump. 792 Basic IC...
Faults and malfunctions 5.3.1 Error messages If any type of malfunction occurs during operation of the 792 Basic IC, this is shown by error messages in the PC program, which appear ei- ther in an error window or in the window.
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Replace pump tubing (see section 5.2.9) Contamination of the Replace the 6.2821.110 filter in the 6.2821.100 Filter (see section 2.3.5) Filter unit PEEK Counterpressure at Clean or replace suppres- suppressor module too sor (see section high 5.2.6 5.2.8) 792 Basic IC...
If no error message is displayed, it may be as- sumed the instrument is operating without faults. The 792 Basic IC has an integrated diagnostic program which, in the case of possible malfunctions or faulty behavior, allows the service technician to check the functioning of certain assemblies and localize the fault.
Thermostatting Connectable dynamic control to operating temperature Operating temperature 40 °C Max. temperature deviation 2.5°C Heating time 30 min Temperature stability 0.01°C at constant ambient temperature Connection for detector block Dsub 15 pin (female) 792 Basic IC...
Response time: 5 pump cycles Pump head Pump head volumes Main piston: 40 L Priming piston: 20 L Pump displacement Main piston: 28.5 L volumes Priming piston: 14.25 L Length of stroke Main piston: 3.6 mm Priming piston: 1.8 mm 792 Basic IC...
–40 +70°C 6.1.12 Housing Material of cover Polyurethane rigid foam (PUR) with fire protection for fire class UL94VO, CFC-free Material of base Steel, enameled Width 255 mm Height 385 mm Depth 343 mm Weight (incl. accessories) 15.8 kg 792 Basic IC...
All dimensions are given in mm. The 2.792.0020 Basic IC includes the following parts: Quant. Order No. Description 1.732.0110 Detector block (metal-free) with permanently attached connecting cable to 792 Basic IC 6.1803.020 PTFE capillary Length = 5 m 0.97 1.57 6.1826.060...
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Connection between 6.2744.010 PEEK compression fitting and 6.2816.020 Syringe 6.2816.020 Syringe made of PP, volume = 10 mL; for manual filling of the sample loop 6.2821.090 Aspirating filter Pore dimension 20 m For 6.1834.000 Aspirating tubing. Set of 5. 792 Basic IC...
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Filter unit PEEK 2 m To avoid contamination due to abrasive particles of piston seals. Spare part: 6.2821.110 Filter 25.5 6.6045.003 Software-CD «792 Basic IC 1.0» Y.107.0150 Cable strap 8.732.2003 Metrohm Monograph «Ion chromatography» (English) 8.732.2013 «IC Application Notes» (English) 8.792.1003...
6.3 Optional accessories Optional accessories 6.3.1 Accessories for 792 Basic IC Order No. Description 6.1825.XXX Sample loop, made of PEEK For injection valve; incl. two 6.2744.010 PEEK compression fittings 6.1825.230: Volume = 10 L 6.1825.210: Volume = 20 L 6.1825.220: Volume = 100 L 6.1831.010...
IC anion column Star-Ion A300HC High-capacity anion column for determination of anions with chemical suppression. Column dimensions: 100 10 mm Precolumn: 6.1011.020 6.1005.200 IC anion column Organic Acids For the determination of organic acids. Column dimensions: 250 7.8 mm 792 Basic IC...
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Note: The 6.2620.150 Pulsation dampener must be used for operation of this column! 6.1006.100 IC anion column METROSEP Anion Dual 2 For the determination of anions with and without chemical suppression. Column dimensions: 75 4.6 mm Precolumn: 6.1011.020 792 Basic IC...
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6.1006.530 IC anion column METROSEP A SUPP 5 250 For the determination of anions with chemical suppression. Column dimensions: 250 4.0 mm Precolumn: 6.1006.500 Note: The 6.2620.150 Pulsation dampener must be used for operation of this column! 792 Basic IC...
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IC cation column METROSEP Cation 1-2. Column dimensions: 20 4.0 mm Installation using 6.2821.050 Twin cartridge holder. 6.1010.100 IC cation column METROSEP C 1 For the determination of monovalent and divalent cations without chemical suppression. Column dimensions: 125 4.6 mm Precolumn: 6.1010.200 792 Basic IC...
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6.1012.100: set of 10 6.1012.X10 Sample pretreatment cartridge IC-H Cation exchanger in H orm. Removes inter- 2– – fering cations, CO , HCO or for alkaline samples. With Luer connection. 6.1012.010: set of 50 6.1012.110: set of 10 792 Basic IC...
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To hold precolumn cartridges; installed in the inlet capillary of the separating column. 6.2828.100 Glass cartridge holder To hold the 6.1006.0020 Column cartridge METROSEP Anion Dual 1. 6.2828.110 Precolumn cartridge holder To hold the 6.1006.0030 Precolumn cartridge METROSEP Anion Dual 1. 792 Basic IC...
Lack of an official damage report releases Metrohm from any liability to pay compensation. If any instruments and parts have to be returned, the original packaging should be used if at all possible.
6.4 Warranty and conformity 6.4.2 EU Declaration of conformity EU Declaration of Conformity The METROHM AG company, Herisau, Switzerland hereby certifies, that the instrument: 792 Basic IC meets the requirements of EC Directives 89/336/EEC and 73/23/EEC. Source of the specifications: EN 50081-1 Electromagnetic compatibility, basic specification;...
The features of the system software are documented in the instruc- tion manual. Metrohm Ltd. is holder of the SQS-certificate of the quality system ISO 9001 for quality assurance in design/development, production, installation and servicing. Herisau, April 15, 2001 Dr.
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