Antec Scientific DECADE II 171, User Manual, Page: 80 / 87

80 DECADE II user manual, ed. 11
Decreased sensitivity (low S/N ratio)
Possible cause Remedy
Fouled WE by dirty samples Clean WE, if possible: dilute samples
Cell potential too low
Optimise potential
Contaminated buffer (high
I
cell
)
Replace buffer, do not recycle the buffer
Base line oscillations
Possible cause Remedy
Malfunctioning pump
(regular pattern) Check pump (seals, valves)
Over-tightened cell bolts Adjust cell bolts, check pump pressure
Air bubbles in cell or REF Maintenance REF
Temperature oscillations Set oven temperature
Contaminated buffer (high
I
cell
)
Replace buffer, do not recycle the buffer
Fouled WE Clean WE
Fe
++
in buffer Add EDTA, passivate metal parts with HNO
3
Saturation of output
Possible cause Remedy
Damaged REF Check with spare REF, replace if necessary
Damaged WE Replace cell block
Cell incorrectly connected Check connections (REF: black, WE: red,
AUX: blue)
Cell potential too high Optimise cell potential