Flow Cell Schematic - Waters 432 Operator's Manual

TP01271
Ion Detection Theory
The conductance of a solution of known concentration can be calculated using the
following equation:
G = measured conductance of the solution, in Siemens
−1
(1 S = ohm )
C = concentration in equivalents per 1000 cm
K = length/area of cell (the cell constant)
λ = equivalent conductance in S cm
Table 1-1 lists the equivalent conductances of some common ions.
−5 −3
10 to 10 N, generally exhibit decreased equivalent conductance due to interionic
effects.
1
3
2
Figure 1-2 Flow Cell Schematic
λC
----------
G =
3 –
10
−1
2
equiv
1= Reference Electrodes
2= Detection Electrodes
3= Guard Electrode
Flow Cell Block
Fluid Outlet
3
1
Concentrations above
(heated)
28
1