To Next Page

To Previous Page

inoLab

Multi 9620 IDS Ion concentration

ba77173e04 12/2017 57

7.3.1 Standard addition

In the "Standard addition" procedure, a known amount of standard solution is

added to the sample.

The ion concentration in the sample is calculated from the change in potential.

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

#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.

9. Immerse the electrode in the sample.

10. Using <><> and <ENTER>, select the values for the volume of

the sample (Sample volume) and the volume of the ISA/TISAB solution

(ISA/TISAB vol.).

Immerse sensor in sample

Sample volume 100.0 ml

ISA/TISAB vol. 1.0 ml

Continue

Standard addition

01.09.2017 08:00

wtw inoLab Multi 9620 IDS User Manual

Questions and Answers: