Metrohm 794 Basic Titrino - Manual (Page 23)

2.4 Tutorial
794 Basic Titrino
19
If the titration runs too slow or too fast, you can change the control parameters during the
titration. If you wish to titrate faster, change the following parameters:
• dynamics: lower value, the control range becomes smaller (Attention: possibility of
titrating over the set EP)
• max.rate: bigger value
• min.rate: bigger value
You will find further details of the control parameters on page 42.
After the titration, end point volume and pH value at the end point are displayed.
For the evaluation enter:
the formula to calculate the m value
(key <DEF>) RS1=EP1*C01*C02
with an accuracy of RS1 decimal places 2
the unit RS1 unit: mmol/L
and the calculation constants
C01 1 (concentration of titrant ×10)
(key <C-FMLA>) C02 4 (factor for the sample size 100 mL/25 mL)
If you have a printer connected, select the automatic titration report (key <DEF>): "re-
port:full". You can print out the results of the previous titration with keys
<PRINT><REPORTS><ENTER>.
If the previous titration has run to your satisfaction, you can start thinking about perform-
ing statistics calculations. Have you already added a new sample to the titration vessel? If
you are no longer certain, you can find out immediately with <MEAS/HOLD>.
Rapid measurement between titrations
Press <MEAS/HOLD>. The pH value of your sample is displayed. You can stop the
measurement with a second <MEAS/HOLD>.
Statistics calculations
Now switch on the statistics calculations. Press <STATISTICS>. The "Statistics" LED is
on. Duplicate determinations are now performed.
• Perform 2 titrations.