BASi (Bioanalytical Systems, Inc.) develops instruments and components used across electroanalytical chemistry, sensor research, environmental monitoring, and clinical studies. Known for reliability in electrochemical experiments, BASi designs analyzers capable of cyclic voltammetry, square wave voltammetry, pulsed voltammetry, and impedance spectroscopy, supporting researchers who require accurate, low-noise data for electroactive species and corrosion measurement workflows. These systems help streamline electroanalytical measurements in applications ranging from corrosion cell evaluations to flow injection analysis and biosensing development.
BASi also manufactures a complete range of accessories that enable flexible cell and electrode configurations. This includes reference electrodes, carbon paste electrodes, graphite rods, platinum rods, jacketed vessels, sample holders, corrosion cells, and components for bipotentiostat measurements. These tools support laboratory setups for aqueous, non-aqueous, in vivo research, and solid-state science experiments, allowing researchers to optimize thermal control, solution handling, and electrode geometry according to project needs.
Designed for consistent performance in both routine and advanced electrochemical studies, BASi products are used in sensor development, environmental sampling, discrete samples testing, and field applications where stability and repeatability are essential. MSE Supplies provides access to BASi Research Products, offering dependable sourcing, product information, and support for laboratories requiring specialized electrochemical equipment. Request a quote to configure your BASi workstation with the analyzers, electrodes, and accessories suited to your research goals.
The Difference Between a Cell That Works and a Measurement You Can Publish
An electrochemical cell that produces a clean voltammogram on the bench has cleared a low bar. The harder requirement is that the same cell, rebuilt next month by a different person, produces a curve close enough to the first that the difference means something about the sample rather than about the assembly. Most of what separates those two situations is not the potentiostat. It is the geometry, the surface state of the electrodes, and the consistency of everything that touches the electrolyte before the scan starts.
Geometry and Surface State as Controlled Variables
Electrode spacing, active area and the position of the reference relative to the working electrode set the uncompensated resistance that every subsequent measurement carries. Reproducing those dimensions is the function of a purpose-built cell body rather than a flexible arrangement of clamps, and matched electrochemistry supplies keep the same geometry available run after run. Surface state matters as much: a platinum mesh electrode that has been polished to a defined finish behaves consistently, while one cleaned by whatever was to hand introduces a variable that no amount of careful scanning can remove afterwards.
Delivering Electrolyte and Sample Without Introducing New Variables
Flow-based electrochemical techniques fail in predictable ways when the transfer stage is treated as plumbing rather than as part of the experiment. A laboratory peristaltic pump isolates the fluid inside the tubing, so the wetted path is defined by tubing chemistry rather than by pump internals, and selecting a peristaltic pump with appropriate tubing keeps that path inert across a long run. Where the cell feeds a parallel optical measurement, a UV-Vis spectrophotometer reading the same solution gives an independent check on concentration that electrochemical data alone cannot supply.
Where Electrochemistry Meets Other Measurement Programmes
Electrochemical work rarely sits alone. In vivo research pairs it with sampling hardware, where in vivo sampling products govern how a sample reaches the cell and how much it has changed on the way. In energy storage the same cell chemistry is evaluated at a different scale, and Nebula battery cycling equipment runs the long-duration protocols that a bench cell is not built to sustain. The two answer different questions about the same material.
Reproducibility is designed into the fixture before it is defended in the analysis, which is why cell hardware deserves the same scrutiny as the instrument reading it. To compare which ranges cover cell hardware, transfer and long-duration cycling, browse all brands.
What to know before you buy
BASi, short for Bioanalytical Systems, makes electrodes, cells and accessories for voltammetry and other electroanalytical work. This collection is mostly the parts labs replace and restock: reference electrodes, working electrodes, auxiliary electrodes, polishing supplies and cell hardware.
Reference electrodes include the Ag/AgCl reference electrode in 3M NaCl, a 3M KCl version, the RE-6 with flexible wire connector, an alkaline reference and a non-aqueous reference kit. Keep them filled with the matching storage and refill solution, and replace frits with CoralPor packs. Working electrodes include the 3.0 mm glassy carbon electrode, a 1.6 mm platinum electrode and screen printed electrodes with gold, graphite or platinum working surfaces.
Electrode surfaces need regular polishing, so the PK-4 polishing kit, 0.05 µm alumina suspension and alumina polishing pads are listed here. For more on keeping reference potentials stable, see why reference electrode drift undermines electrochemical measurements.
Frequently Asked Questions
Should I use a NaCl or KCl filled Ag/AgCl reference electrode?
Both are common for aqueous work. 3M NaCl avoids potassium perchlorate precipitation in perchlorate electrolytes, while 3M KCl is the more widely used filling. Pick one and keep the matching refill solution on hand, such as 3M NaCl storage solution or 3M KCl solution.
Which reference electrode works in organic solvents?
Use the non-aqueous reference electrode kit for acetonitrile and other organic electrolytes. Aqueous Ag/AgCl electrodes can leak water and chloride into the cell and drift. A double-junction reference electrode chamber adds a second barrier between the filling solution and the sample.
How often should I polish a glassy carbon or platinum working electrode?
Polish at the start of each day of work and whenever voltammograms show broadened peaks or lower currents. Use the alumina polishing pads with 0.05 µm alumina suspension, then rinse well. The PK-4 kit groups these supplies together.
What do I need to build a complete three-electrode cell?
You need a working electrode, a reference electrode, an auxiliary electrode and a cell body. A typical set is the glassy carbon electrode, an Ag/AgCl reference, the platinum coil auxiliary electrode and the standard low volume cell kit. The single channel cell lead cable connects it to your potentiostat.
When are screen printed electrodes a better fit?
Screen printed electrodes put the electrodes on one printed strip, so they suit sensor development, small sample volumes and quick screening. Choose the working surface: 2 mm gold, 2 mm graphite or 1 mm platinum. They are single use, so no polishing is needed.
How do I order several electrodes or refill packs?
For lab-wide restocking of reference electrodes, CoralPor frits and refill solutions, send the items and quantities through the bulk order request form. For a mixed BASi order or a teaching lab set, use the quote request page.
