FAQ

Common questions and their answers

We have collected here some frequently asked questions and their answers. So maybe you find an answer here to a questions, you were just about to ask us.

Content of the Packages

The Corrosion Handbook is more than 40 pages document explaining the basic principles of corrosion measurements as well as some practical aspects. Polarization curves, Tafel plots and Evans Diagram will be discussed as well as Electrochemical Impedance Spectroscopy (EIS) as well as Equivalent Circuit Fitting.

If you are just starting starting with electrochmistry or your have experience in electrochemistry but not in corrosion research, this handbook will provide some essential knowledge to you, which will enable you to perform first measurements and to dive deeper into corrosion literature, if necessary, equipped with the right terminology and a grasp of the principles.

The contents include among other topics:

  • Potentiostats
  • What Is a Potentiostat Good for?
  • How Does a Potentiostat Work (in a nutshell)?
  • Electrodes
  • Origins of electrochemical potentials
  • Corrosion Potential
  • Corrosion current
  • Tafel Plot and Evans Diagram
  • Polarization Curves
  • Electrochemical Impedance Spectroscopy
  • Bode and Nyquist Plot
  • Equivalent circuit fitting for corrosion measurements
  • Constant Potential vs OCP or vs Reference Electrode
  • Rapid Electrochemical Assessment of Paint
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In short the Corrosion Cell Kit includes the following items:

• 1 x 1 L glass vessel
• 2 x graphite counter with holder
• 1 x saturated calomel electrode with salt bridge
• 1 x sample holder for flat coupons
• 2 x platinum counter electrodes
• 1 x parts for the Stern-Makrides arrangement
• spare O-rings and Teflon parts

The glass cell can take up a volume of up to one liter. It has several openings to place two counter electrodes, one samples holder / working electrode, a reference electrode with salt bridge and a gas inlet.

The graphite counter electrodes are two graphite rods with 5 mm diameter and 30 cm length.

The saturated calomel reference electrode has a ball junction so the electrode together with included salt bridge can be easily placed and fixed with a ball flask clamp.

The sample holder allows a flat disc shaped sample to be fixed in the Teflon housing with an electrical connection outside the cell and a defined surface area (1 cm diameter) exposed to the solution in the cell.

The Stern-Makrides arrangement needs a cylindrical sample with a screw thread, so the sample holders metal rod can be screwed directly into the sample. Teflon cones make sure the metal rod is properly sealed away in a hollow glass rod.

The two platinum counter electrodes have a rectangular platinum sheet  at their ends. These counter electrodes are more expensive, but are more resistant to corrosive solutions than the carbon.

 

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Installation and Training

Most customers do not require an installation and training. Devices connections are self-explanatory and the software installation can be easily executed by following the instructions on the screen.

A short quick start delivered with the device guides you through your first measurements. We also have a collection of tutorial videos, if you would like to see more details of the software.

Due to the fact that we don’t have to offer an installation and training, we could lower our prices and offer our potentiostats for very economical rates. If you do however require an installation and training, we can arrange it with one of our local representatives.

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  • Windows Vista, 7, 8, or 10 (32-bit or 64-bit)
  • 1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
  • 1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit)
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Together with your device an activation code was delivered. You can use this activation code to register at my.palmsens, where you can download the newest version of the software. If you have lost your activation code, don’t worry, you can request at my.palmsens a new one.

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Yes, please. We do highly encourage all our customers to regularly check for updates of the software, if the computer with the PSTrace / MultiTrace Software is not connected to the internet.

Computers with PSTrace or MultiTrace and access to the internet will check for software updates automatically every time the software is started.

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