...

-         100 mM alkalinity (pipet 10 mL 0.5 M Na2CO3 into 90 mL 0.7 M KCl)

Main instrument panel

Image RemovedImage Added

Instrument calibration

...

1. Place 3 mL of standard in vessel. Add stir bar and immerse electrode in vessel.
2. Select Continue.
   
3. Click START.
4. The first measurement that the system measures, is sample pH. Record the value in the blue book (just in case…).
5. Insert the acid dispensing probe when prompted.

6. When the titration is complete, a window appears showing the results.
   
   

   When finished, clean vessel and the electrode.

   Click Done/Save to save the results to the LIMS database. The value saved to LIMS, and the value you need to note in the blue book (just for completeness, in case…) is the “Corrected Alkalinity” value. This is the value with the standard ratio applied to it.When finished, clean vessel and the electrode.