Sievers TOC 800 - IC Calibration Constant Adjustment

Ionics Instruments 2004 Page 9-15 DLM 30007-08 Rev. A
IC Calibration Constant
After the TC channel has been calibrated, the IC channel is calibrated with a 25 ppm
Na
2
CO
3
standard using the TC channel to determine the actual concentration of the
standard.
To prepare IC Calibration Standards on site, refer to Appendix E.
Step 1 – Configure the analyzer for standard measurements:
The IC Standard will have a TOC/IC ratio of < 0.1 and will cause the analyzer
to display Warning #42. If desired, turn off the Warning #42 display option as
described in the Installation chapter before analyzing the standard. This
warning will be written to the Error Stack even if the Warning #42 is turned off.
1. From the Main menu, scroll to START TOC, and press ENTER to display the
GRAB SAMPLING menu.
2. Scroll to SETUP and press ENTER.
3. From the GRAB SAMPLE SETUP menu, scroll to REAGENTS and press
ENTER.
4. Scroll to ACID FLOW RATE and press ENTER.
5. Verify that the Acid Flow Rate is set to 0.75 µL/min. Press CLEAR to return to
the REAGENTS menu.
6. Scroll to OXIDIZER FLOW RATE and press ENTER. Set the Oxidizer Flow
Rate to 0.01 µL/min. Press ENTER to save the value, and press ENTER
again to confirm the value. Press CLEAR twice to return to the SETUP menu.
7.
Under the REPETITIONS and REJECTIONS respectively, verify that the
repetitions are set to 10 and the rejects are set to 7.
8.
Press CLEAR to return to the the GRAB SAMLING MODE Menu.
Step 2 – Measure the 25 mg/L Carbon as Na
2
CO
3
IC Calibration Standard: