600E Potentiostat/Galvanostat

Model 600E Series
Electrochemical Analyzer / Workstation
The Model 600E series is designed for general purpose electrochemical measurements. The figure below
shows the block diagram of the instrument. The system contains a fast digital function generator, a direct digital
synthesizer for high frequency AC waveforms, high speed dual-channel data acquisition circuitry, a potentiostat, and
a galvanostat (available only in select models). The potential control range is ±10 V and the current range is ±250
mA. The instrument is capable of measuring current down to picoamperes. With the CHI200B Picoamp Booster and
Faraday Cage (fully automatic and compatible with the CHI600E series), currents at sub-picoamperes can be
measured. The instrument is very fast. The function generator can update at a 10 MHz rate. Two high speed and
high resolution data acquisition channels allow both current and potential (or an external voltage signal) to be
sampled simultaneously at a rate of 1 MHz, with 16-bit resolution. The instrument provides a very wide dynamic
range of experimental time scales. For instance, the scan rate in cyclic voltammetry can be up to 1000 V/s with a 0.1
mV potential increment or 5000 V/s with a 1 mV potential increment. The potentiostat / galvanostat uses a 4-
electrode configuration, allowing it to be used for liquid/liquid interface measurements, and eliminating the effect of
the contact resistance of connectors and relays for high current measurements. The data acquisition systems also
allow an external input signal (such as spectroscopic) to be recorded simultaneously during an electrochemical
measurement.

The 600E series is the upgrade to our very popular 600/600A/600B/600C/600D series. The major
improvements of this series are very stable and accurate potential and current control, and dual channel data
acquisition at high speed.
The 600E series has a USB port (default) or a serial port for data communication with the PC. You can
select either USB or serial port (but not both) by changing the switch setting on the rear panel of the instrument.
The 600E series also includes a true integrator for chronocoulometry.
Two 16-bit highly stable bias circuits are used for current and potential bias, allowing a wider dynamic
range in AC measurements. These can also be used to re-zero the DC current output.
The model 600E series can be upgraded to the corresponding model 700E series bipotentiostat with an addon board that includes circuitry for the second channel’s potential control, current measurement (including
sensitivity switching), two low-pass filters, three gain stages, and channel selection. It is therefore identical to the
600E series when used for single channel measurements. When it is used as a bipotentiostat, the second channel can
be controlled at an independent constant potential, to scan or step at the same potential as the first channel, or to scan
with a constant potential difference with the first channel. The second channel is available for many voltammetric
and amperometric techniques.

The instrument is capable of a wide variety of electrochemical techniques, and is available with integrated
simulation and fitting software functions for both impedance and cyclic voltammetry. These features provide
powerful tools for both electrochemical mechanistic studies and trace analysis.
We provide several different models in the 600E series. The following table compares the different models.
Other than what is listed, the specifications and features of these models are identical. Models 600E and 610E are
basic units for mechanistic study and electrochemical analysis, respectively. They are also great for teaching
purposes. Models 602E and 604E are for corrosion studies. Models 620E and 630E are comprehensive
electrochemical analyzers. Models 650E and 660E are advanced electrochemical workstations.

Figure 3. Voltammogram and QCM data of oxidation of pyrrole to form polypyrrole film. Scan rate 0.1 V/s.
The instrument can also be used to perform standard QCM measurements. Figure 4 shows QCM data for a
flow cell detection experiment. The total frequency change observed was less than 8 Hz, with extremely low long
term drift and noise levels..
The model 400C series is the upgrade to the model 400/400A/400B series. The new design provides more
stable and accurate potential control (1 mV, 0.02%), and it also allows the resistance change and frequency change
to be measured simultaneously.