Xylem ProLab 1000 BENCH TOP pH METER - Manual (Page 51)

ProLab 1000 Operation
51 ba75576e04 01/2011
4.5.8 Measurements with dead stop function
Measurements with dead stop function are normally used for measured
value logging during a manual dead stop titration (e.g. Karl Fischer
titration).
A voltage is present at the dead stop sockets. The voltage value is con-
stant before the end point of the titration is reached.
Even with a small excess of titration solution, a very strong voltage drop
occurs.
Thus the end point of the titration is reached.
Preparatory activities
1 Connect the pH socket and dead stop socket with the dead
stop cable.
2 Connect a double Pt electrode, e.g. type Pt 1400, to the dead
stop sockets of the meter.
3 Immerse the double Pt electrode in the test sample.
4 On the meter, switch to the mV display with <MODE>.
Double Pt-electrode
Dead stop cable