Metrohm 790 Personal IC User manual

CH-9101 Herisau/Switzerland
Phone ++41 71 353 85 85
Fax ++41 71 353 89 01
Internet www.metrohm.ch
E-Mail [email protected]
790 Personal IC
Program «790 PC Software 1.0»
790 Personal IC
POWER
8.790.1003 Instructions for Use
14.08.2000 / dö

Table of contents
790 Personal IC I
Table of contents
1 Introduction........................................................................................................... 1
1.1 Instrument description ..........................................................................................1
1.2 Parts and controls ..................................................................................................3
1.3 Information on the Instructions for Use ...........................................................10
1.3.1 Organization ..........................................................................................10
1.3.2 Notation and pictograms ......................................................................11
1.4 Safety notes ...........................................................................................................12
1.4.1 Electrical safety .....................................................................................12
1.4.2 General precautionary rules..................................................................12
2 Installation ..........................................................................................................13
2.1 Overview.................................................................................................................13
2.1.1 Flow chart..............................................................................................13
2.1.2 Connections in the 790 Personal IC......................................................13
2.2 Setting up the instrument....................................................................................15
2.2.1 Packaging .............................................................................................15
2.2.2 Check ....................................................................................................15
2.2.3 Location.................................................................................................15
2.3 Attaching the accessories...................................................................................15
2.3.1 Connection of detector block................................................................15
2.3.2 Connection of syringe and aspirating tubing........................................16
2.3.3 Connection of the 6.5324.000 Bottle rack (option) ...............................16
2.3.4 Connection of PEEK capillaries ............................................................17
2.3.5 Filter unit PEEK......................................................................................18
2.4 Mains connection..................................................................................................19
2.4.1 Setting the mains voltage......................................................................19
2.4.2 Fuses.....................................................................................................20
2.4.3 Mains cable and mains connection......................................................20
2.4.4 On/off switching of the instrument ........................................................20
2.5 Connection to the PC ...........................................................................................21
2.5.1 Connecting cable..................................................................................21
2.5.2 Software installation ..............................................................................21
2.5.3 Basic settings........................................................................................22
2.6 High-pressure pump ............................................................................................25
2.6.1 Removing the transport security screws...............................................25
2.6.2 Installing the pulsation dampener (option) ...........................................25
2.6.3 Connecting the eluent bottle.................................................................27
2.6.4 Deaerating the pump and rinsing the pulsation dampener..................27
2.7 Precolumns and separating columns ...............................................................30
2.7.1 General information on precolumns .....................................................30
2.7.2 Precolumns with cartridge head ...........................................................30
2.7.3 Precolumn glass cartridges with cartridge holder ................................32
2.7.4 IC anion precolumn SUPERSEP ...........................................................33
2.7.5 General information on separating columns.........................................34
2.7.6 Selection of the sample loop.................................................................34
2.7.7 Installation of the separating column without suppressor ....................35
2.7.8 Installation of the separating column with suppressor .........................36

Table of contents
790 Personal IC
II
2.8 Suppressor module.............................................................................................. 37
2.8.1 General information on suppressor module......................................... 37
2.8.2 Preparation of the peristaltic pump....................................................... 37
2.8.3 Connection of supply bottles................................................................ 40
2.8.4 Connection of the suppressor module................................................. 41
2.9 Putting into operation.......................................................................................... 43
2.9.1 Putting into operation without suppressor (cation system) .................. 43
2.9.2 Putting into operation with suppressor (anion system) ........................ 44
2.10 Connection of external devices ......................................................................... 46
2.10.1 Connection of the 750 Autosampler ..................................................... 46
2.10.2 Connection of the 766 IC Sample Processor ....................................... 47
3 Operating tutorial........................................................................................ 51
3.1 Requirements ........................................................................................................ 51
3.2 Preparations .......................................................................................................... 52
3.3 Calibration ............................................................................................................. 53
3.4 Sample determination.......................................................................................... 60
4 Operation............................................................................................................... 63
4.1 Fundamentals of the operation.......................................................................... 63
4.1.1 Starting/closing the program ................................................................ 63
4.1.2 Glossary ................................................................................................ 64
4.1.3 Overview of program windows ............................................................. 65
4.1.4 Main window elements ......................................................................... 66
4.1.5 Icons of the main window ..................................................................... 66
4.1.6 Overview of file types ............................................................................ 67
4.1.7 Context sensitive menus....................................................................... 68
4.1.8 Keyboard and mouse functions ........................................................... 68
4.1.9 Help....................................................................................................... 69
4.2 Instrument and software settings...................................................................... 70
4.2.1 Fonts ..................................................................................................... 70
4.2.2 Security system..................................................................................... 70
4.2.3 Global settings...................................................................................... 71
4.2.4 COM port .............................................................................................. 73
4.3 Systems.................................................................................................................. 74
4.3.1 System window ..................................................................................... 74
4.3.2 System file handling.............................................................................. 74
4.3.3 System functions................................................................................... 75
Start/stop hardware and record baseline ..................................... 75
Start/stop determinations.............................................................. 75
Print system parameters ............................................................... 76
4.3.4 PC icon.................................................................................................. 77
4.3.5 Watch window....................................................................................... 77

Table of contents
790 Personal IC III
4.3.6 Instrument icon......................................................................................78
Menu options for instrument icon .................................................78
System parameters for disconnected system ..............................78
Instrument control for connected system .....................................79
Time program................................................................................80
Configuration.................................................................................82
Hardware settings .........................................................................82
4.3.7 System state window ............................................................................84
Status messages ..........................................................................84
Error messages.............................................................................85
4.4 Methods..................................................................................................................86
4.4.1 Method file handling..............................................................................86
4.4.2 Passport ................................................................................................86
General..........................................................................................87
Sample ..........................................................................................88
Column..........................................................................................89
Eluent ............................................................................................90
Comment.......................................................................................90
Method Log...................................................................................91
Data Log........................................................................................92
4.4.3 Method setup ........................................................................................93
General..........................................................................................93
Processing ....................................................................................93
Math ..............................................................................................94
4.4.4 Integration .............................................................................................96
Setup .............................................................................................97
Events............................................................................................98
4.4.5 Calibration and quantification .............................................................100
General information.....................................................................100
Notations .....................................................................................101
External standard calibration.......................................................102
Component table ........................................................................102
Peak identification .......................................................................104
Concentration table.....................................................................106
Calibration curve .........................................................................108
Update calibration.......................................................................110
Load and save calibration data...................................................111
Import and export calibration data..............................................111
Put out calibration curves............................................................111
4.4.6 Report output ......................................................................................112
Report options.............................................................................112
4.5 Chromatograms ..................................................................................................124
4.5.1 Chromatogram window.......................................................................124
4.5.2 Chromatogram file handling ...............................................................125
Open chromatogram...................................................................125
Save chromatogram....................................................................126
Close chromatogram ..................................................................126
Delete chromatogram .................................................................126
Export chromatogram .................................................................127
4.5.3 Graphical representation.....................................................................128
Appearance.................................................................................128
Other graphical functions............................................................132
4.5.4 Peak editor ..........................................................................................133
Switching on/off the peak editor .................................................133
Peak editor functions ..................................................................133
Moving the cursor .......................................................................134

Table of contents
790 Personal IC
IV
4.5.5 Printing ................................................................................................ 135
Page layout for printing............................................................... 135
Printer settings ............................................................................ 136
Print preview................................................................................ 136
Printing ........................................................................................ 136
4.5.6 Miscellaneous functions ..................................................................... 136
Reintegration............................................................................... 136
Recalibration ............................................................................... 136
Subtraction of a chromatogram.................................................. 137
Data compression....................................................................... 137
Invert chromatogram................................................................... 137
4.6 Sample queue......................................................................................................138
4.6.1 Sample queue file handling ................................................................ 138
Open sample queue ................................................................... 138
Save sample queue .................................................................... 138
Delete sample queue.................................................................. 138
4.6.2 Sample queue control......................................................................... 139
Sample queue overview table..................................................... 139
Start sample queue..................................................................... 140
Pause sample queue.................................................................. 141
Cancel last run ............................................................................ 141
Reset sample queue................................................................... 141
4.6.3 Sample queue editor........................................................................... 141
Open queue editor window ........................................................ 141
Sample queue editor functions................................................... 143
Print sample queue..................................................................... 143
Close sample queue editor......................................................... 143
4.7 Batch reprocessing ............................................................................................144
4.7.1 Batch reprocessing queue file handling............................................. 144
Open batch reprocessing queue................................................ 144
Create new batch reprocessing queue ...................................... 144
Save batch reprocessing queue................................................. 144
4.7.2 Perform batch reprocessing ............................................................... 145
Reprocess options window ........................................................ 145
Merge chromatograms ............................................................... 148
4.7.3 Batch reprocessing queue editor ....................................................... 149
Open batch reprocessing queue editor window ........................ 149
Batch reprocessing queue editor functions ............................... 150
Print batch reprocessing queue ................................................. 150
Close batch reprocessing queue editor ..................................... 150

Table of contents
790 Personal IC V
5 Notes – Maintenance – Faults................................................... 151
5.1 Practical notes on ion chromatography .........................................................151
5.1.1 Separating columns ............................................................................151
5.1.2 High-pressure pump ...........................................................................152
5.1.3 Eluents.................................................................................................153
5.1.4 Peristaltic pump...................................................................................153
5.1.5 Suppressor module.............................................................................154
5.1.6 Connections ........................................................................................154
5.2 Maintenance and servicing ...............................................................................155
5.2.1 General information.............................................................................155
5.2.2 Passivation ..........................................................................................155
5.2.3 Recycling.............................................................................................156
5.2.4 Shutdown ............................................................................................156
5.2.5 Changing separating columns............................................................156
5.2.6 Maintenance work at the pump head .................................................158
5.2.7 Regeneration of the suppressor module ............................................162
5.2.8 Cleaning the suppressor.....................................................................163
5.2.9 Replacing the suppressor...................................................................165
5.2.10 Exchanging the pump tubing..............................................................167
5.3 Faults and malfunctions....................................................................................168
5.3.1 Error messages ...................................................................................168
5.3.2 Malfunctions and their rectification .....................................................168
5.4 Diagnostic tests / Validation / GLP ..................................................................170
6 Appendix............................................................................................................. 171
6.1 Technical data .....................................................................................................171
6.1.1 Conductivity measurement .................................................................171
6.1.2 Conductivity detector ..........................................................................171
6.1.3 Injection valve......................................................................................171
6.1.4 High-pressure pump ...........................................................................172
6.1.5 Peristaltic pump...................................................................................173
6.1.6 Suppressor module.............................................................................173
6.1.7 RS232 interface ...................................................................................173
6.1.8 Remote interface .................................................................................174
6.1.9 Mains connection................................................................................174
6.1.10 Safety specifications ...........................................................................174
6.1.11 Electromagnetic compatibility (EMC)..................................................174
6.1.12 Ambient temperature...........................................................................174
6.1.13 Housing ...............................................................................................175
6.2 Standard equipment...........................................................................................176
6.3 Optional accessories .........................................................................................179
6.3.1 Accessories for 790 Personal IC.........................................................179
6.3.2 Separating columns and precolumns.................................................181
6.3.3 Additional devices and cables............................................................185
6.4 Warranty and conformity...................................................................................186
6.4.1 Warranty ..............................................................................................186
6.4.2 EU Declaration of conformity ..............................................................187
6.4.3 Certificate of conformity and system validation ..................................188
6.5 Index......................................................................................................................189

Table of contents
790 Personal IC
VI
List of figures
Fig. 1: Front of the 790 Personal IC............................................................................3
Fig. 2: Rear of the 790 Personal IC ............................................................................4
Fig. 3: Interior of the 2.790.0010 Personal IC.............................................................6
Fig. 4: Interior of the 2.790.0020 Personal IC.............................................................8
Fig. 5: Connecting diagram for 2.790.0010 Personal IC without suppressor..........14
Fig. 6: Connecting diagram for 2.790.0020 Personal IC with suppressor...............14
Fig. 7: Connectors for capillaries .............................................................................17
Fig. 8: 6.2821.100 Filter unit PEEK...........................................................................18
Fig. 9: Setting the mains voltage..............................................................................20
Fig. 10: Connection of the pulsation dampener (option) ...........................................26
Fig. 11: Installation of precolumn cartridges with cartridge head..............................31
Fig. 12: Installation of precolumn glass cartridges with cartridge holder ..................33
Fig. 13: Installation of column without suppressor ....................................................36
Fig. 14: Installing pump tubings.................................................................................38
Fig. 15: Installation of column with suppressor..........................................................39
Fig. 16: Connections at suppressor module..............................................................42
Fig. 17: Components of the pump head..................................................................159
Fig. 18: Replacement of the piston seal 92
9292
92 .............................................................159
Fig. 19: Component of inlet valve 93
9393
93 and outlet valve 94
9494
94........................................161
Fig. 20: Assembling the suppressor ........................................................................165

Table of contents
790 Personal IC VII
List of numbered parts and controls
1
11
1Door to interior..................................3,6,8
2
22
2Mains pilot lamp .....................................3
3
33
3Feedthrough for syringe tubing..............3
4
44
4Feedthrough for aspirating tubing....3,6,8
5
55
5Opening for detector cable ....................4
6
66
6Rear panel opening ................................4
7
77
7Opening for outlet capillaries .................4
8
88
8Knurled screw.........................................4
9
99
9Detachable rear panel ............................4
10
1010
10 Transport security screws.......................4
11
1111
11 Mains switch......................................4,20
12
1212
12 Mains connection plug ......................4,20
13
1313
13 Fuse holder........................................4,20
14
1414
14 RS232 interface ......................................4
15
1515
15 Connection for detector block................4
16
1616
16 Remote interface ....................................4
17
1717
17 Serial number .........................................4
18
1818
18 Inlet capillary for injector.................6,8,26
19
1919
19 Mounting rail ..............................6,8,36,39
20
2020
20 Column connection
capillary............................6,8,31,33,36,39
21
2121
21 Sample loop ........................................6,8
22
2222
22 Injection valve .......................6,8,26,36,39
23
2323
23 Aspirating tubing .................................6,8
24
2424
24 Coupling ..............................................6,8
25
2525
25 Syringe tubing......................................6,8
26
2626
26 PEEK coupling................................6,8,39
27
2727
27 Connection capillary.......................6,8,26
28
2828
28 Filter unit PEEK ................6,8,18,26,38,39
29
2929
29 Connection capillary.......................6,8,26
30
3030
30 Connection capillary............................6,8
31
3131
31 Purge valve .....................................6,8,26
32
3232
32 Aspirating capillary ..............................6,8
33
3333
33 Fastening screws ................................6,8
34
3434
34 Pump head ...................................6,8,159
35
3535
35 Connection capillary............................6,8
36
3636
36 Connection capillary............................6,8
37
3737
37 Inlet capillary for
detector block............................6,8,36,39
38
3838
38 Detector block ...........................6,8,36,39
39
3939
39 Suppressor module .......................... 8,39
40
4040
40 Tubing cartridge........................... 8,38,39
41
4141
41 Contact pressure lever................. 8,38,39
42
4242
42 Holding clamp .................................. 8,39
43
4343
43 Snap-action lever......................... 8,38,39
44
4444
44 Pump drive........................................ 8,39
45
4545
45 Mounting pin..................................... 8,39
46
4646
46 Compression fitting.......... 17,18,31,33,38
47
4747
47 Compression fitting.............................. 17
48
4848
48 Capillary ..................................... 17,18,33
49
4949
49 Connector with filter ............................. 18
50
5050
50 Housing for filter unit PEEK.................. 18
51
5151
51 Connector without filter........................ 18
52
5252
52 Pulsation dampener............................. 26
53
5353
53 Connection to injection valve............... 26
54
5454
54 Connection to purge valve................... 26
55
5555
55 Manufit housing ................................... 31
56
5656
56 Steel connector.................................... 31
57
5757
57 PTFE gasket......................................... 31
58
5858
58 2 Steel meshes .................................... 31
59
5959
59 Precolumn cartridge ............................ 31
60
6060
60 Steel spacer ......................................... 31
61
6161
61 4 Steel meshes .................................... 31
62
6262
62 Manufit pressure screw ....................... 31
63
6363
63 Separating column..................... 31,36,39
64
6464
64 End fitting............................................. 33
65
6565
65 Screw cap for precolumn..................... 33
66
6666
66 Screw cap for precolumn..................... 33
67
6767
67 Precolumn cartridge ............................ 33
68
6868
68 Connection piece................................. 33
69
6969
69 Screw cap for column.......................... 33
70
7070
70 Column holder ................................ 36,39
71
7171
71 Aspirating tubing for H2O................ 38,39
72
7272
72 Aspirating tubing for H2SO4............ 38,39
73
7373
73 Coupling ......................................... 38,39
74
7474
74 Pump tubing for H2SO4................... 38,39
75
7575
75 Pump tubing for H2O ...................... 38,39
76
7676
76 Stopper ................................................ 38
77
7777
77 Coupling ......................................... 38,39

Table of contents
790 Personal IC
VIII
78
7878
78 Suppressor inlet capillary
for eluent..........................................39,42
79
7979
79 Suppressor outlet capillary
for eluent..........................................39,42
80
8080
80 Suppressor inlet capillary
forH
2O........................................38,39,42
81
8181
81 Suppressor inlet capillary
forH
2SO4....................................38,39,42
82
8282
82 Suppressor outlet capillary
forH
2O.............................................39,42
83
8383
83 Suppressor outlet capillary
forH
2SO4.........................................39,42
84
8484
84 Screw..................................................159
85
8585
85 Zircon piston.......................................159
86
8686
86 Spring retainer....................................159
87
8787
87 Spring .................................................159
88
8888
88 Piston cartridge ..................................159
89
8989
89 Piston guide sleeve ............................159
90
9090
90 Sapphire supporting ring ...................159
91
9191
91 Piston guide sleeve ............................159
92
9292
92 Piston seal ..........................................159
93
9393
93 Inlet valve .....................................159,161
94
9494
94 Outlet valve ..................................159,161
95
9595
95 Screw holder.......................................159
96
9696
96 Special tool .........................................159
97
9797
97 Special tool .........................................159
98
9898
98 Valve housing .....................................161
99
9999
99 Sealing ring.........................................161
100
100100
100 Sleeve .................................................161
101
101101
101 Sapphire sleeve ..................................161
102
102102
102 Sapphire sphere .................................161
103
103103
103 Ceramic holder ...................................161
104
104104
104 Seal.....................................................161
105
105105
105 Screw nut............................................165
106
106106
106 Connection piece ...............................165
107
107107
107 Suppressor rotor.................................165
108
108108
108 Suppressor holder..............................165

1.1 Instrument description
790 Personal IC 1
1 Introduction
1.1 Instrument description
The Personal IC 790 is a PC-controlled system for ion chromatogra-
phic analyses. The two following versions are available:
• 2.790.0010 Personal IC without suppressor module
• 2.790.0020 Personal IC with suppressor module
The extremely compact housing of the 790 Personal IC contains every-
thing needed to carry out ion chromatography at a high quality level:
• Injection valve – for individual injections or for use with a sample
changer such as the Metrohm 766 IC Sample Processor
• High-pressure pump – extremely low-pulsation double piston
pump with a flow range from 0.2 …2.5 mL/min and a maximum
pressure of 25 MPa (250 bar)
• Column chamber – the perfect insulation of the housing provides
not only thermally stable conditions for the separation column but
also shields the system against electromagnetic interference
• Columns – whether anion columns with or without suppression,
separation columns for cations or organic acids – the 790 Personal
IC can accommodate them all
• Suppressor – the Metrohm Suppressor Module (MSM) is already
integrated in the 2.790.0020 Personal IC – pressure-resistant, with
fully automatic regeneration, highest performance and optimal re-
producibility
• Peristaltic pump – integrated two-channel peristaltic pump with a
flow rate of 0.5 …0.6 mL/min for regeneration and rinsing of the
suppressor module built into the 2.790.0020 Personal IC
• Detector – conductivity detector with outstanding temperature
stability. The detector temperature of 40 °C varies by less than
0.01°C.
All components which come into contact with eluent and sample are
metal-free.

1 Introduction
790 Personal IC
2
The operation of the 790 Personal IC takes place via a PC connected
to the RS232 interface with the help of the control and evaluation pro-
gram «790 Personal IC». This PC program can be used to open pre-
pared systems for recording and evaluating chromatograms and
change them if need be. Time programs can also be created in which a
large number of instrument functions can be triggered for each pro-
gram step. It is also possible to control sample changers such as the
750 Autosampler or the 766 IC Sample Processor via the remote inter-
face.
The operating software for the 790 Personal IC meets all the require-
ments you could place today on a modern integration software: single
or multi-point calibration, internal or external standard, selectable algo-
rithms for non-linear calibration, various integration modes with integra-
tion parameters and integration events, different methods for peak rec-
ognition, peak editor, free scaling, superimposing several chromato-
grams, use of sample tables and batch reprocessing; a powerful and
GLP-conform report generator with output interfaces for monitor, printer
and external databases.

1.2 Parts and controls
790 Personal IC 3
1.2 Parts and controls
2134
790 Personal IC
POWER
Fig. 1: Front of the 790 Personal IC
1Door to interior 3Feedthrough for syringe tubing
for connection of the 6.2816.020 syringe
used for aspirating the sample
2Mains pilot lamp
lit up when instrument switched on
4Feedthrough for aspirating tubing

1 Introduction
790 Personal IC
4
SS
Fig. 2: Rear of the 790 Personal IC
WARNING - Fire Hazard -
with the same type and rating of fuse
For continued protection replace only
Fuse
100-120V:
220-240V: 1,0A(T) 0,5A(T)
Made by Metrohm Herisau Switzerland
RS 232
DetectorBlock
Remote
Waste B Waste A
Transport security screws
99
1010
1111
1212
1313
66 77 66 55
1515 1414
88
1717
1616
55
88
88 88
f = 50-60 Hz
S = 100 VA
Type

1.2 Parts and controls
790 Personal IC 5
55 Opening for detector cable 1212 Mains connection plug
mains connection, see section 2.4
66 Opening for outlet capillaries
for discharge of eluent, regeneration
solution, and rinsing solution from the
inner compartment
1313 Fuse holder
changing the fuses, see section 2.4
77 Rear panel opening
(closed with plastic stopper) for
additional supply and discharge lines to
and from the inner compartment
1414 RS232 interface
connection of the PC
88 Knurled screw
for fastening the rear panel 99
1515 Connection for detector block
99 Detachable rear panel
access to upper part of inner
compartment
1616 Remote interface
remote I/O lines for connection of a
sample changer (750, 766)
1010 Transport security screws
to secure the pump head when the
instrument is transported
1717 Serial number
1111 Mains switch
to switch instrument on and off:
I = ON 0 = OFF

1 Introduction
790 Personal IC
6
Fig. 3:Interior of the 2.790.0010 Personal IC
(with permanently attached accessories and
1.733.0110 Detector block)
2929
3636
11
1818
1919
1919
2020
2121
2222
3535
3434
3333
3232
3131
3030
2828 2727 2626
3737
3838
POWER
2323
2424
2525

1.2 Parts and controls
790 Personal IC 7
11 Door to interior 2828 Filter unit PEEK (6.2821.100)
1818 Inlet capillary for injector
PEEK capillary,
length L= 24 cm
2929 Connection capillary
PEEK capillary,
length L= 13 cm
1919 Mounting rail
for 6.2027.0X0 column holder 3030 Connection capillary PTFE capillary for connection of the
6.2816.020 syringe,
length L= 70 cm
2020 Column connection capillary
PEEK capillary,
length L= 30 cm
3131 Purge valve
2121 Sample loop 10 µµL
6.1825.230 PEEK sample loop
3232 Aspirating capillary
Connection for 6.1834.010 aspirating
tubing
2222 Injection valve 3333 Fastening screws
for pump head 3434
2323 Aspirating tubing
PTFE tubing for aspirating the sample;
length L= 65 cm
3434 Pump head (6.2824.100)
2424 Coupling (6.2744.120)
for connection of the 6.2816.020 syringe
3535 Connection capillary
Connection pump head –purge
valve, fixed mounting
2525 Syringe tubing
PTFE tubing for connection of the
syringe,
length L= 35 cm
3636 Connection capillary
in pump head, fixed mounting
2626 PEEK coupling (6.2744.040)
3737 Inlet capillary for detector block PEEK capillary, fixed mounting
2727 Connection capillary
PEEK capillary,
length L= 13 cm
3838 Detector block (1.732.0110)

1 Introduction
790 Personal IC
8
Fig. 4:Interior of the 2.790.0020 Personal IC
(with permanently attached accessories and
1.733.0110 Detector block)
2929
3636
11
1818
1919
1919
2020
2121
2222
3535
3434
3333
3232
3131
3030
2828 2727 2626
3737
3838
3939
4040
4141
4545 4444 42424343
POWER
2323
2424
2525

1.2 Parts and controls
790 Personal IC 9
1Door to interior 32 Aspirating capillary
Connection for 6.1834.010 aspirating
tubing
18 Inlet capillary for injector
PEEK capillary,
length L= 24 cm
33 Fastening screws
for pump head 34
19 Mounting rail
for 6.2027.0X0 column holder
34 Pump head (6.2824.100)
20 Column connection capillary
PEEK capillary,
length L= 30 cm
35 Connection capillary
Connection pump head – purge
valve, fixed mounting
21 Sample loop 20 µ
µµ
µL
6.1825.210 PEEK sample loop
36 Connection capillary
in pump head, fixed mounting
22 Injection valve
37 Inlet capillary for detector block
PEEK capillary, fixed mounting
23 Aspirating tubing
PTFE tubing for aspirating the sample;
length L= 65 cm
38 Detector block (1.732.0110)
24 Coupling (6.2744.120)
for connection of the 6.2816.020 syringe
39 Suppressor module
(inlet and outlet capillaries are not
shown)
25 Syringe tubing
PTFE tubing for connection of the
syringe,
length L= 35 cm
40 Tubing cartridge (6.2755.000)
for 6.1826.060 pump tubing
26 PEEK coupling (6.2744.040)
41 Contact pressure lever
for adjusting the contact pressure
27 Connection capillary
PEEK capillary,
length L= 13 cm
42 Holding clamp
for locking the tubing cartridge into
place
28 Filter unit PEEK (6.2821.100) 43 Snap-action lever
for releasing the tubing cartridge
29 Connection capillary
PEEK capillary,
length L= 13 cm
44 Pump drive
roller head with contact rollers
30 Connection capillary
PTFE capillary for connection of the
6.2816.020 syringe,
length L= 70 cm
45 Mounting pin
for attaching the tubing cartridges
31 Purge valve

1 Introduction
790 Personal IC
10
1.3 Information on the Instructions for Use
Please read through these Instructions for Use carefully before you put
the 790 Personal IC into operation. The Instructions for Use contain
information and warnings to which the user must pay attention in order
to assure safe operation of the instrument.
1.3.1 Organization
These 8.790.1003 Instructions for Use for the 790 Personal IC pro-
vide a comprehensive overview of the installation, startup procedure,
operation, fault rectification and technical specifications of this instru-
ment. The Instructions for Use are organized as follows:
Section 1 Introduction
General description of instrument, parts and controls
and safety notes
Section 2 Installation
Installation of accessories, putting instrument into
operation, connection of sample changers
Section 3 Operating tutorial
Introduction to the operation using an example
Section 4 Operation
Detailed description of the operation
Section 5 Notes – Maintenance – Faults
Notes on ion chromatography, maintenance, fault rectifi-
cation, diagnostic tests, validation
Section 6 Appendix
Technical data, standard equipment, options, warranty,
declarations of conformity, index
To find the required information on the instruments, you will find it an
advantage to use either the Table of contents or the Index at the
back.
As a supplement to the Instructions for Use, the 8.732.2003 Metrohm
Monograph "Ion chromatography" is also supplied. This provides
an introduction to the theoretical fundamentals and general information
on separating columns and sample pretreatment.
The 8.732.2013 IC Applications Collection is also supplied; this con-
tains all the Application Notes on the subject of ion chromatography.
You will find detailed information on the separating columns available
from Metrohm and on special IC applications in the relevant "Applica-
tion Bulletins", which are available on request free of charge from
your Metrohm agency.

1.3 Information on the Instructions for Use
790 Personal IC 11
1.3.2 Notation and pictograms
The following notations and pictograms (symbols) are used in these In-
structions for Use:
Range Menu item, parameter or entry
value
SYSTEM STATE Program window
<OK> Button
[ Ctrl ] Key
35
3535
35 Part or control of 790
12
1212
12 Part or control of 750
26
2626
26 Part or control of 766
Hazard
This symbol draws attention to a
possible danger to life or of injury if
the associated directions are not
followed correctly.
Warning
This symbol draws attention to
possible damage to instruments or
instrument parts if the associated
directions are not followed cor-
rectly.
Caution
This symbol marks important
information. First read the associ-
ated directions before you con-
tinue.
Comment
This symbol marks additional
information and tips.