...
– | Make sure the probe storage container is filled with 3 M KCl solution and the reservoir is filled with 0.1 M HCl solution. |
– | Ensure no air bubbles are present in the acid dispensing line. Press DOS on the body of the titrator to push acid through the line and remove air bubbles. |
– | Change out the Drierite trap when ~50% of the color turns from blue to pink. |
| – | In case of a bubbling noise, top up your temperature-controlled water bath. Use tap water. Check titration vessel for air space and eliminate if present. |
| – | Black AgS2 may precipitate in the diaphragm of the electrode from sulfide containing samples. You will most likely notice a decline in the electrode's performance, and the diaphragm that has turned black. Treat the diaphragm with freshly prepaired 7% Thiourrea solution in 0.1 mol/l HCl. |
Consumables
Electrode: Metrohm 6.0234.100 or equivalent. |
0.1 M HCl, Fisher CH5009 |
Microvalve buret tip, Metrohm 020683244, CM5129 |
...