Potentiostat / Galvanostat
EC301 — ±30 V compliance voltage, ±1 A maximum current

EC301 Potentiostat / Galvanostat· ±30 V compliance voltage· ±1 A current· Up to ±20 A power booster (opt.)· ±15 V polarization range· Built-in EIS· Full-featured software included· Ethernet and GPIB interfaces

The EC301 gives electrochemists the opportunity to equip theirlabs with high compliance, research-grade instrumentation ata very attractive price. Stand-alone front-panel operation
allows easy use in the field or in handling routine electrodepreparation. The free Windows software (SRSLab) has
routines for all major electrochemical experiments and canbe downloaded from the SRS web site. The EC301 has anopen command set which allows scientists to write their own
unique waveforms and even write custom software.
Front-Panel Operation
The intuitive front panel of the EC301 allows you to quickly
and easily set up several scan types (CV, LSV, steps andholds). Unlike many competitive models, the EC301 is astand-alone instrument – you don’t need to use a computer.
The array of indicator LEDs make it easy to know the state of
the instrument at a glance.
Software Included
The SRSLab software supports all the major electrochemical
techniques including voltammetry, pulsed waveforms, step
techniques, and Electrochemical Impedance Spectroscopy(EIS). You can even design your own custom measurements.
Data is acquired over the TCP/IP interface or via IEEE-488(GPIB). The software lets you easily configure sequences ofexperiments and shows you the data as they are generated.
The data is easily exported to spreadsheets and graphingpackages.

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EC301 Potentiostat / Galvanostat

Designed for EIS
Built-in Temperature Measurement
The EC301 was designed with electrochemical impedance
spectroscopy (EIS) in mind. Instead of employing driven
shields, we bring the measurement close to the cell via aremote preamplifier. This means higher accuracy and lesssusceptibility to parasitic effects. Shunt resistor current
measurements in all ranges enhance control loop stability,enabling EIS at high frequencies. The EC301 performs
stand-alone EIS measurements up to 100 kHz. An externalfrequency response analyzer (FRA) can be used to measure
EIS at frequencies up to 1 MHz using analog connections.
Compliance Limiting
Quite often, electrochemists are working with sensitive
cells which would be destroyed if the full compliance ofa potentiostat were brought to bear. Bubbles in a flow cellsystem can easily cause potentiostats to lose voltage control
by blocking feedback to the instrument from the referenceelectrode. Without compliance limiting, a carefully preparedelectrode will be ruined. With this feature, the user can simply
select the maximum potential the counter electrode will beallowed to apply. When the limit is reached, it is clamped
to the preset level. Compliance limiting guarantees safe
operation even if control is lost.

Temperature is a critical parameter in many battery, fuel celland corrosion experiments, but it is often not recorded. Notknowing the temperature at which the data were acquired
can make it difficult to compare your results. With a built-in
input for a 100 Ω platinum RTD, the EC301 makes it easy
to acquire and plot temperature right along with the rest of
your data.
Open Command Set
While our software supports all major electrochemical
techniques, we realize that electrochemistry isn’t static.
When a new technique or procedure is developed, the open
command set lets experimentalists write customized software
to support it. You can write in LabVIEW, MATLAB, or any
other language.

Optional Power Boosters
SRS offers a ±5 A (O100BST), ±10 A (O200BST) or ±20 A
power booster for applications requiring higher current. All
three are affordably priced.
Floating Working ElectrodeIn normal operation, the working electrode current return path
is tied to chassis ground. However, there are times in whichelectrochemists wish to experiment with working electrodesthat are intrinsically grounded (e.g., water pipes, rebar inconcrete, an autoclave). Once the shorting bar from the rear
panel of the instrument is removed, the ground return path
floats, allowing these experiments.
Fast Cyclic Voltammetry
The EC301 supports scan rates up to 10 kV/s. Potential,
current and an auxiliary signal are all acquired simultaneously
at 250,000 samples per second. Furthermore, an AC line
detection circuit allows synchronization of repetitive scanswith the power line cycle.

EC301 front panel

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EIS of two time constant load

Ordering Information
EC301
O100BST
O200BST
O400BST
QCM200O100CAB
O100RTD

30 V / 1 A potentiostat / galvanostat±5 A power booster±10 A power booster±20 A power booster
Quartz Crystal Microbalance
Replacement terminal cables
RTD for EC301

EC301 rear panel

EC301 Specifications

Power Amplifier (CE)
Compliance voltage
Maximum current
Bandwidth
Slew rate
CE limit
Set range
Bandwidth
Bandwidth limit

Current Measurement
±30 V
±1 A
>1 MHz (10 kΩ load, <100 µA)≥10 V/µs
Limits counter electrode voltagewhen enabled±500 mV to ±30 V
1 MHz
10 Hz, 100 Hz, 1 kHz, 10 kHz,100 kHz, 1 MHz cutoff frequencies

Differential Electrometer (EC19 Module)
Input range
Input impedance
Input bias current
Bandwidth
CMRR

±15 V
>1 TΩ in parallel with 20 pF<20 pA>10 MHz>80 dB (<10 kHz)

Potentiostat Mode
Applied voltage range
Resolution
Accuracy
Automatic scan rate
Noise and ripple±15 V
500 µV (200 µV performing anautomatic scan)±0.2 % of setting ±5 mV
0.1 mV/s to 10 kV/s
<20 µVrms (1 Hz to 10 kHz)

±1 nA to ±1 A in decades
0.001 x full scale current±0.5 % of reading ±0.2 % of range±0.2 % of reading ±0.2 % of range
1 pA/s to 2 A/s

Power Booster (opt.)
Maximum current
Compliance voltage±1 nA to ±1 A in decades
0.01 % of full scale current±0.5 % of reading ±0.2 % of range±0.2 % of reading ±0.2 % of range
4 µs (250 kS/s)

Voltage and Current Analog Outputs
Voltage output
Accuracy±15 V output±0.2 % of VRE – VWE Sense±5 mV
Output impedance
50 Ω
Max. output current 10 mA
Filters
No filtering or 10 Hz low-pass
Bias rejection±15 V (full range)
Current output±2 V
Accuracy
IWE within ±0.5 % of (VBNC(1A range)× IRange) ±0.2 % × IRange
Accuracy
IWE within ±0.2 % of (VBNC(all other ranges) × IRange) ±0.2 % × IRange
Max. output current 10 mA
Filters
No filtering or 10 Hz low-pass
Bias rejection±2 V (full range)

IR Compensation
Positive feedback
Range

Galvanostat Mode
Applied current ranges
Setpoint resolution
Accuracy
1 A range
All other I-ranges
Automatic scan rate

Range
Resolution
Accuracy
1 A range
All other current
Acquisition rate

Resolution

3 Ω to 3 GΩ(depends on current range)
1 mΩ (1 A range) to100 kΩ (1 nA range)

Current interrupt
Switching time
<5 µs (1 kΩ resistive load)
Interrupt duration
100 µs to 1 s
Interrupt frequency 0.1 Hz to 300 Hz
EIS±5 A, ±10 A or ±20 A
±20 V

Mode

Potentiostatic / Galvanostatic

Sine Wave Generator (open control loop)
ZRA Mode
Voltage offset

CESense and WE electrodes heldwithin ±5 mV of each otherVoltage MeasurementRange
Resolution±15 V range±5 V range±2 V range
Accuracy
Acquisition rate

±15 V
0.4 mV
0.1 mV
0.06 mV±0.2 % of reading ±5 mV
4 µs (250 kS/s)

Frequency range
Frequency setability
Sweep
Amplitude, p’stat
Amplitude, g’stat(1A range)
Amplitude resolution

10 µHz to 100 kHz
1 µHz
Linear or logarithmic
10 mVpp to 15 Vpp
1% of full scale current to 2x fullscale current
1 mV (potentiostatic) or 0.1% offull scale current (galvanostatic)
Potentiostatic DC offset ±14.9 V(| offset + amplitude | <15V)
Impedance Analyzer
Frequency

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10 µHz to 100 kHz

EC301 Potentiostat / Galvanostat

Phase Accuracy
Amplitude Accuracy

2 degrees (typical, load andfrequency dependent)
1% (typical, load andfrequency dependent)

SRSLab Software
Communication
Operating system
Measurements

Temperature Measurement
100 Ω Pt RTD±1 °C (–100 °C to +200 °C)

Sensor
Accuracy

IEEE-488.2 & TCP/IP interfaces
Windows
Cyclic Voltammetry (CV)Linear Sweep Voltammetry
Cyclic Staircase Voltammetry (Tast)
Square Wave VoltammetryDifferential Pulse Voltammetry(DPV)
Rotating Electrode Output (front-panel BNC)
Range
Accuracy

Differential Normal Pulse
Voltammetry (DNPV)
Timed Hold
Quartz Crystal Microbalance

0 to 10 V settable analog output±1 % of setting ±5 mV(QCM)

External Input (front-panel BNC)
Input range
Potentiostat mode
Galvanostat mode
Impedance
Bandwidth
ADD TO SCAN
buttonDIRECT CONTROL
buttonElectrochemical ImpedanceSpectroscopy (EIS)±15 V (potentiostat mode), ±2 V(galvanostat mode)
1 V input corresponds to an appliedvoltage of 1 V
1 V input corresponds to an applied
voltage of 1 A
10 kΩ in parallel with 50 pF>1 MHzAdds the external input voltage tointernally-generated scans
Takes the control voltage or current
solely from the external input

Rear-Panel Inputs and Outputs
Timebase
Raw E
Raw I
CE / 3Sync ADC
CI sync
Scan trigger
Program E/I
ADC 1,2,310 MHz, 1 Vpp±15 V output±2 V output (1 V full scale)±10 V, VCE/3 voltage output,
1 MHz bandwidth±10 V analog input
TTL output for IR compensation
Digital input. Falling edge begins
automatic scan
±15 V input (sum of internal andexternal voltage programs)±10 V analog inputs (general purpose)

GeneralDimensions
WeightWarranty

17" × 5.25" × 19.5" (WHL)
26 lbs.
One year parts and labor on defects
in materials & workmanship

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Differential normal pulse