Metrohm 794 Basic Titrino - Manual (Page 172)

6.3. User methods
794 Basic Titrino
168
6.3.4 "Chloride"
Electrode:
6.0430.100 Ag-Titrode at measuring input 1.
Titrant:
c(AgNO
3
) = 0.01 mol/L for low Cl - contents,
e.g. in tap water
c(AgNO
3
) = 0.1 mol/L for higher Cl - contents,
e.g. in food
Sample:
Dissolve sample and add HNO
3
.
Remarks:
Select the appropriate formula. The other may
be deleted.
Reference:
METROHM Application Bulletin Nr. 130
Content of Cl - in ppm
Content of table salt in %
Sample size in g
Concentration of titrant
Molar mass of Cl
Factor for ppm
Molar mass of NaCl
Concentration of titrant
Factor for %
'pa
794 Titrino 01102 794.0010
date 2002-01-03 time 09:40 0
DET U Chloride
parameters
>titration parameters
meas.pt.density 4
min.incr. 10.0 µl
titr.rate max. ml/min
signal drift 50 mV/min
equilibr.time 26 s
start V: OFF
pause 0 s
meas.input: 1
temperature 25.0 °C
>stop conditions
stop V: abs.
stop V 99.99 ml
stop U OFF mV
stop EP 1
filling rate max. ml/min
>statistics
status: OFF
>evaluation
EPC 5
EP recognition: all
fix EP1 at U OFF mV
pK/HNP: OFF
>preselections
req.ident: OFF
req.smpl size: all
activate pulse: OFF
------------
'fm
794 Titrino 01102 794.0010
date 2002-01-03 time 09:40 0
DET U Chloride
>calculations
Chloride=EP1*C01*C02*C03/C00;2;ppm
NaCl=EP1*C04*C05*C06/C00;2;%
C00= 1.0
C01= 0.01
C02= 35.45
C03= 1000
C04= 58.44
C05= 0.1
C06= 0.1
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