wtw inoLab 740, Operating Manual, Page: 115 / 274

Ion concentration
115
7.4.1 Select the measuring method
For the inoLab Level 3 pH/ION measuring module.
The following methods are supported:
l Standard Addition ( Std Add )
l
Double Standard Addition ( Std Add ++ )
l Standard Subtraction ( Std Sub )
l
Sample Addition ( Smp Add )
l Sample Subtraction ( Smp Sub )
l
Blank value Addition ( Bw Add )
1 Switch on the measuring system with
e
.
2 Connect the electrode to the measuring module.
3 Connect a temperature probe to the measuring
system so that any temperature differences that are
too high will be indicated during calibration.
4 Keep the standard solutions ready.
5 Adjust the temperature of the standard solutions.
6 Switch to the Menu mode.
7 Use
46
to select the main Meas menu.
8 Select the ISE menu item with
82
.
9 Confirm the ISE menu item with
g
.
The ISE measured variable appears on the display
(
✔
).