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The ACM FemtoAmp is a very sensitive
instrument, able to measure currents down at the level
of femtoamps and offering incredibly high input
impedance. We use short double screened ptfe leads of
the highest standard from the FemtoAmp to the cell but
if the cell is not screened from electrical interference
a noisy signal can be picked up in the cell and
reference electrode. The way to eliminate this is by
placing the cell and leads in a Faraday cage and also
incorporating the FemtoAmp in an additional, internal
Faraday Cage. This we have done with The Femto Cage. A
standard, bench standing Gill AC is used to interface to
the Femto Cage where the additional potentiostat, ZRA
and Electrometer are placed within the protective
Faraday shield. Mains (power line) pick up is virtually
eliminated. This solution can be purchased as a complete
package with a Gill AC and Femto Cage together, or you
already have a Gill AC or Gill 8/12 it can be ordered as
a Femto Cage alone.
If the electrochemical cell is picking up electrical
noise from the environment, the additional use of The
Cage or Femto Cage is strongly recommended
Also see The Cage |
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