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PARSTAT 4000A Potentiostat Galvanostat

PARSTAT4000A has industry-leading voltage accuracy and standard, dynamic current range


  • The highest degree of DC voltage accuracy. Measure a 4.3V battery 4 times more accurately.
  • Wide dynamic current range, both standard (range ±4 A to ±40 pA, 1.2 fA) and expandable (±20 A to ±4 pA, 122 aA)
  • New stability modes expand support for a variety of cells and samples.
  • Improved implementation of the EIS technique including advanced calibration, faster duration, new algorithms, and increased bandwidth
  • Easy-to-use VersaStudio software included


Applications and Software


The PARSTAT 4000A is unique in its ability to offer high compliance voltage and wide current dynamic range, as standard, to cover a variety of applications. The PARSTAT 4000A builds on history of PAR as the world leader in DC electrochemical measurements and leverages a common R/D team with Solartron Analytical, the world leader in frequency response analyzer (FRA) technology, to provide a best in class complete system.

Specifically, the PARSTAT 4000A has industry-leading DC voltage accuracy, both applied and measured. This is advantageous for all electrochemical experiments, whether operating as a potentiostat, galvanostat, or voltage ammeter. Zero Resistance (ZRA). The most common research areas and techniques that benefit from this improved accuracy are:

Energy:  Batteries (Li-ion, Li-Air, Zn-Air), capacitors, and fuel cells, providing charge and discharge curves (including CC-CV) for capacity vs. number of cycles or coulombic efficiency, as well as techniques dedicated as Constant Power, Constant Resistance and Potentiostatic/Galvanostatic Intermittent Titration Technique (PITT, GITT)

voltammetry Electrochemical and physical electrochemical sensors: provide fundamental electrochemical techniques such as cyclic voltammetry and chronotechnics. Advanced Voltammetry techniques also include Pulse Voltammetry methods.

Corrosion:  Bare Metal Corrosion, Galvanic Couplings, and Coatings – Provides multiple corrosion analysis techniques, including the most common ASTM standards such as Linear Polarization Resistance (LPR, ASTM G59), Tafel (ASTM G5), Cyclic Polarization (ASTM G61 ), etc.   New, hardware-based, user-selectable stability modes further expand the PARSTAT4000A's compatibility with a variety of electrochemical cells and samples.

Impedance: Separation of electrochemical responses into individual contributions for a better understanding of the system under test.

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