inoLab
®
Multi 9620 IDS Ion concentration
ba77173e04 12/2017 59
7.3.2 Standard subtraction
In the "Standard Subtraction" procedure, a known amount of standard solution
is added to the sample (as complexing agent or precipitating agent) and, thus,
the ion concentration lowered.
The ion concentration in the sample is calculated from the change in potential.
Calibration
Measurement
1. Select the measuring method (see section 7.3 S
ELECTING THE MEASUR-
ING METHOD, page 56).
2. Prepare two standard calibration solutions.
3. Perform a two-point calibration according to user guidance.
4. The calibration record is displayed as soon as a stable value is
achieved for the second standard calibration solution.
01.09.2017 08:00
01.09.2017 08:00
#1 0.010 mg/l 358.1 mV 25.0 °C
#2 0.020 mg/l 374.4 mV 25.0 °C
Slp.: 54.1 mV
Sensor +++ (Ion type: Ag)
CALIBRATION
ADA 94/IDS DIN
B092500013
5. Start the measurement with <F1>/[Continue].
An entry window appears.
6. Prepare the sample.
7. If necessary, add the ISA/TISAB solution to the sample.
8. Thoroughly rinse the electrode with deionized water.
i
Immerse sensor in sample
Sample volume 100.0 ml
ISA/TISAB vol. 1.0 ml
Continue
Standard subtraction
01.09.2017 08:00
To Next Page
Loading...
Need help?
General
