Metrohm 900 Touch Control Operation instructions

900 Touch Control
Tutorial
8.900.8010EN

Metrohm AG
CH-9100 Herisau
Switzerland
Phone [phone]
Fax [phone]
[email protected]
www.metrohm.com
900 Touch Control
Tutorial
8.900.8010EN 01.2019

Technical Communication
Metrohm AG
CH-9100 Herisau
[email protected]
This documentation is protected by copyright. All rights reserved.
This documentation has been prepared with great care. However, errors
can never be entirely ruled out. Please send comments regarding possible
errors to the address above.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents
900 Touch Control ￭￭￭￭￭￭￭￭ III
Table of contents
1 Introduction 1
1.1 Structure of the tutorial ....................................................... 1
1.2 Symbols and conventions .................................................... 1
2 Setup and configuration 3
2.1 Setting up the instruments .................................................. 3
2.2 Configuring ............................................................................ 5
2.2.1 Switching the instrument on and off ........................................ 5
2.2.2 Switching off the instrument .................................................... 6
2.2.3 Display elements and controls .................................................. 6
2.2.4 Setting the dialog language ..................................................... 8
2.2.5 Configuring a new titrant ........................................................ 9
2.2.6 Defining the report output ..................................................... 12
3 Carrying out simple titrations 14
3.1 Creating a titration method ............................................... 14
3.2 Entering user name and sample data ............................... 23
3.3 Carrying out the determination ........................................ 25
3.3.1 Preparing the titration ............................................................ 25
3.3.2 Carrying out the titration ....................................................... 26
3.3.3 Displaying the results ............................................................. 27
3.3.4 Recalculating the determination ............................................. 28
3.3.5 Printing a report manually ...................................................... 30
4 Carrying out an extended titration 31
4.1 Statistics function ............................................................... 31
4.2 Saving the determination and the PC/LIMS report ......... 32
4.3 Modifying the titration parameters .................................. 34
4.4 Saving a method ................................................................. 37
4.5 Creating a sample table ..................................................... 37
4.6 Carrying out titrations ........................................................ 40
4.7 Displaying statistics data ................................................... 41
5 Setting up the user administration 42
5.1 Creating a user list .............................................................. 42
5.2 Automatic login with USB flash drive ............................... 44
5.3 Login with password .......................................................... 46

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900 Touch Control ￭￭￭￭￭￭￭￭ 1
1 Introduction
The present tutorial helps you to get acquainted with the operation of the
900 Touch Control. You will be guided step by step through the most
important dialog pages by using a simple pH titration as an example.
Thereby you will learn how to efficiently operate and use the 900 Touch
Control.
1.1 Structure of the tutorial
￭Setup
Preparing the titration system.
￭Basics – simple acid-base titration
Loading and carrying out methods, displaying results.
￭Additional functions – creating methods, statistics etc.
Optimizing titration parameters, calculating statistics, efficiently using
the sample table.
￭User administration
User list, login with USB flash drive or password.
Detailed information on the functioning and operation of the Titrando sys-
tem can be found in the online help and the corresponding manuals:
￭Manual for the Titrando
￭Manual for the 900 Touch Control
￭Manual for the exchange unit
￭Manual for the 800 Dosino or the dosing unit
1.2 Symbols and conventions
The following symbols and formatting may appear in this documentation:
Cross-reference to figure legend
The first number refers to the figure number, the sec-
ond to the instrument part in the figure.
Instruction step
Carry out these steps in the sequence shown.
Method Dialog text, parameter in the software
File ▶ New Menu or menu item
[Next] Button or key

1.2 Symbols and conventions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
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WARNING
This symbol draws attention to a possible life-threat-
ening hazard or risk of injury.
WARNING
This symbol draws attention to a possible hazard due
to electrical current.
WARNING
This symbol draws attention to a possible hazard due
to heat or hot instrument parts.
WARNING
This symbol draws attention to a possible biological
hazard.
CAUTION
This symbol draws attention to possible damage to
instruments or instrument parts.
NOTE
This symbol highlights additional information and
tips.

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900 Touch Control ￭￭￭￭￭￭￭￭ 3
2 Setup and configuration
2.1 Setting up the instruments
What you will need:
￭A 900 Touch Control
￭A Titrando with internal dosing drive and an 806 Exchange Unit
or
A Titrando without internal dosing drive, with an 800 Dosino and an
807 Dosing Unit
￭A magnetic stirrer (801 Stirrer), an 803 Ti Stand or an 804 Ti Stand with
propeller stirrer (802 Stirrer)
￭Some sample vessels
￭A pH electrode with connection cable
￭Possibly an additional 805 Dosimat with an exchange unit (e.g. 20 mL)
or
Possibly an additional 800 Dosino (dosing drive) with a dosing unit (e.g.
20 mL)
￭A bottle with titrant (e.g. caustic soda c(NaOH)=0.1 mol/L)
￭Possibly a printer with connecting cable
￭Possibly a balance with connecting cable
￭Deionized water (carbonate-free)
The manual for the Titrando describes in detail how to install the accesso-
ries. A few notes about this:
Titrant
During this tutorial you will carry out simple titrations. Select an acid or
base as titrant.
Sensor
Use a pH glass electrode for the acid-base titration. Do not forget to plug
the electrode cable into the connector Ind. on the rear of the instrument.
Stirrer
Connect the magnetic stirrer (801 Stirrer) on the rear of the instrument
to the connector MSB 1.
Printer
Select a printer with a USB connector. Use a commercially available USB
cable to connect the printer.

2.1 Setting up the instruments ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
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Balance
If you connect a balance to the 900 Touch Control, you can transfer the
sample size per push-button from the balance to the titrator.
800 Dosino
In case you would like to automatically add an auxiliary solution to the
sample before the titration, you will also need a Dosino. Connect it to the
connector MSB 2 on the Titrando.
Samples and sample vessels
You can use sample beakers of any size. Use an acid or base as sample,
which can be titrated with the selected titrant.
Please note that the stirrer has to be connected to the connector MSB 1
of the Titrando for the following example methods. If you use a Titrando
without internal dosing drive, then you must connect the external dosing
device (here: Dosino) to the MSB connector of the stirrer. This way it will
be controlled like an internal dosing drive of the Titrando, i.e. as dosing
device 1.

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900 Touch Control ￭￭￭￭￭￭￭￭ 5
2.2 Configuring
2.2.1 Switching the instrument on and off
Switching on the instrument
Proceed as follows:
1￭Press the power switch on the left-hand side of the back panel of
the 900 Touch Control.
The 900 Touch Control and the Titrando are initialized and a sys-
tem test is carried out. This process takes some time.
As soon as the buret unit has been recognized a message
appears.
If you use a new buret unit, a request for configuring it will be dis-
played:
The configuration of a new buret unit is described in chapter
2.2.5.
If you take a buret unit already having been used, a request for
applying the titrant data appears instead. Confirm the request
with [Yes] in order to apply the data on the data chip of the buret
unit to the titrant list.

2.2 Configuring ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
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￭Confirm the message with [OK] (or with [Yes]).
The request to carry out the Prepare function ("Prepare" func-
tion) appears:
All tubings and the cylinder of the buret are rinsed with the Pre-
pare function. The preparing of the buret unit is described in
chapter 3.3.1, page 25. The buret unit must, however, first be
configured (see chapter 2.2.5, page 9).
￭Confirm the message with [OK].
The main dialog is displayed.
2.2.2 Switching off the instrument
The 900 Touch Control can be switched off with the power switch on the
left-hand side of the back panel. The switching-off procedure takes a short
time. The current data is saved and the system is shut down during this
process. At the same time, all other instruments connected to the 900
Touch Control via a USB cable are also being switched off.
2.2.3 Display elements and controls
The following display elements and controls are available:

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900 Touch Control ￭￭￭￭￭￭￭￭ 7
Table 1 Fixed keys which are always available
[Home] always opens the main dialog.
[Back] saves the entry and opens the next-higher dialog
page.
[Help] opens the online help for the dialog displayed.
[Print] opens the printing dialog.
[Manual] opens the manual control.
[Stop] cancels the running determination.
[Start] starts a determination.
The file name of the loaded method, the time and the system status are
displayed in the main dialog in the Title bar.
In the other dialogs, the title bar shows the headings of the next upper
level and of the displayed dialog. This is an aid for orientation during navi-
gation through the user dialog.
Table 2 Screen elements
Buttons open a new dialog when they are tap-
ped.
Inactive buttons with gray lettering indicate
that the respective function is not available at the
moment.
Input fields open an input dialog when tapped.
Tapping on the selection symbol opens a selec-
tion list.
A check box can also be activated or deactiva-
ted by tapping on it.

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8￭￭￭￭￭￭￭￭ 900 Touch Control
2.2.4 Setting the dialog language
Changing the language
If the dialog does not appear in the appropriate language, the dialog lan-
guage can be changed. Proceed as follows:
1Opening the system settings
￭In the main dialog, tap on [System].
￭Tap on [System settings].

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900 Touch Control ￭￭￭￭￭￭￭￭ 9
2Changing the dialog language
￭Tap on the input field after Dialog language and select a differ-
ent language.
￭Press the fixed key [ ] (Back) or [ ] (Home).
2.2.5 Configuring a new titrant
Configuring the titrant
You can have all of your titrants and auxiliary solutions be managed by the
instrument. This has the advantage that the relevant data for these solu-
tions (e.g. concentration or titer) can be calculated and monitored auto-
matically.
NOTICE
A buret unit must be attached before carrying out the instructions listed
below.
The solutions are configured under System ▶ Titrant.
Proceed as follows:
1Opening the titrant list
￭In the main dialog, tap on [System].
￭Tap on [Titrant].

2.2 Configuring ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
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￭Tap on [New].
You will now see an entry which depicts the attached buret unit.
￭Tap on [Select].
2Entering the titrant data
￭You can now enter the necessary data for the titrant. Each of the
buttons with the arrow symbol opens selection lists with useful
suggestions.

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900 Touch Control ￭￭￭￭￭￭￭￭ 11
￭Tap on the input field Titrant.
The text editor permits the entry of letters of the alphabet, digits
and mathematical characters.
￭The functions are:
–[a…z] switches over to lower case letters.
–[0…9] switches to digits and mathematical signs.
–[Special characters] switches over to special characters
(additional special characters are available under [More]).
–[A…Z] switches over to upper case letters.
–Backspace (upper right) deletes the character to the left of
the cursor.
–[Delete entry] deletes the entire input field.
– The arrow keys move the cursor.
￭Enter a name for the titrant.
￭Use [OK] to confirm the entry and close the text editor.
Pressing [Cancel] would undo the entry.
￭Enter additional data entries, e.g. for the concentration or the
titer.
The 900 Touch Control manual contains additional information
regarding the settings which can be specified for titrants.
The new titrant has been entered in the list. The cylinder size and the
type of the buret unit are displayed. In the Dos.device column can
be seen whether or not and at which connector and instrument the
titrant is attached.

2.2 Configuring ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭ 900 Touch Control
NOTICE
When you use buret units of the types IDU (intelligent dosing unit)
and IEU (intelligent exchange unit), then data can be applied
directly from the data chip.
The types DU and EU have no data chip. You can create titrants in
buret units which have no data chip yourself by tapping on
[New].
2.2.6 Defining the report output
Configuring the printer
If you wish to print out results and titration curves, then you must config-
ure the printer in the device manager. You also have the option of saving a
report as a PDF file on a USB flash drive. You can then open the reports on
your computer and print them out.
Proceed as follows:
1Configuring a printer
￭In the main dialog, tap on [System].
￭Tap on [Device manager].

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900 Touch Control ￭￭￭￭￭￭￭￭ 13
￭Select Printer and tap on [Edit].
￭Tap on Printer and select a printer type.
￭If you would like to use a printer in your company network, tap
on Connector and select Ethernet. The 900 Touch Control must
already be connected to the network.
You can enter the necessary information for the identification of
the network printer under [Network printer].
￭Return to the main dialog with [].

3.1 Creating a titration method ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
14 ￭￭￭￭￭￭￭￭ 900 Touch Control
3 Carrying out simple titrations
3.1 Creating a titration method
Now create a method for a simple titration. A method contains a
sequence of commands which are executed one after the other.
The acid or base content of a sample should be determined by means of a
triple determination. If you have a printer connected, then a report with
the result and the curve should be printed out automatically at the end of
the determination.
Proceed as follows:
Creating a new method
1Loading a method template
￭In the main dialog, tap on [Load method] and then on [New
method].
￭Select the template Dynamic Titration pH and tap on [Load
template].
Use [Yes] to confirm any message which may appear concerning
the modification of an existing method.