- Potentiostatic Polarization
- Linear Polarization
- Cyclic Polarization
- Corrosion Potential
- Linear sweep voltammetry (LSV)
- Differential pulse voltammetry (DPV)
- Square wave voltammetry (SWV)
- Normal pulse voltammetry (NPV)
- Cyclic voltammetry (CV)
- Chronoamperometry (CA)
- Pulsed amperometric detection (PAD)
- Multiple pulse amperometry (MPAD)
- Open circuit potentiometry (OCP)
- Multistep amperometry (MA)
- Multiplexer for switching between up to 8 or 16 cells with one potentiostat.
- Temperature sensor
- USB galvanic isolator for floating measurements.
- Differential Electrometer Amplifier (DEA for use as floating voltage amplifier with differential input and single output for measuring an auxiliary signal between -5 to +5 V or -10 to +10 V.
The EmStat Blue has a compact design, an internal battery and Bluetooth. This makes electrochemistry available anywhere. It has a wide range of current ranges available up to 100 mA for determining corrosion rates. The auxiliary port makes it easy to connect for example a temperature sensor, a stirrer or other peripherals. It offers all common electrochemical techniques used for corrosion analysis; Linear Polarization, Cyclic Polarization, Corrosion potential measurement as well as applying a constant potential and measuring the open circuit potential (EOC).
The instrument comes with PSTrace5 software which allows for different corrosion analytical techniques for automatic or manual analysis.
The instrument can be used with PStouch: our app for Android that can be used with mobile devices running Android. PStouch allows you to run measurements from your mobile phone or a tablet.
The following techniques are supported by EmStat3+ Blue:
These methods can all be used in their stripping modes which are applied for (ultra-) trace analysis.
Techniques as a function of time:
EmStat3+ Blue specifications
|dc-potential range||± 4.000 V|
|compliance voltage||± 8 V|
|maximum current||± 100 mA typical|
|applied dc-potential resolution||0.125 mV|
|applied dc-potential accuracy||0.3 %|
|current ranges||1 nA to 100 mA (9 ranges)|
|measured current resolution||0.1% of current range, 1 pA at lowest current range|
|current accuracy||≤ 1 %of current range at 1 nA ≤ 0.5 % at 10 nA ≤ 0.2 % at 100 nA to 100 uA ≤ 0.5 % at 1 mA, 10 mA and 100 mA all with max. 0.2 % offset error|
|electrometer amplifier input||> 100 Gohm // 4 pF|
|rise time||approx. 100 μs|
|sensor connection||shielded cable with circular connector for WE, RE, CE and Sense EmStat3+ only|
|EmStat3+ (basic package)||EmStat3+ Blue (standard package)|
|size||6.7 x 5.0 x 2.8 cm (2.6 x 2.0 x 1.1 inch)||10.0 x 6.0 x 3.4 cm (3.9 x 2.4 x 1.3 inch)|
|weight||85 g||250 g|
|communication||USB||USB + Bluetooth|
|sensor connector||LEMO||LEMO + SPE|
PSTrace5 for Windows
PSTrace software is shipped as standard with PalmSens and Emstat instruments. The software provides support for all techniques and device functionalities. With a smooth simple interface, showing only the applicable controls, PSTrace is suitable for all levels of user experience.
The PSTrace5 Corrosion Mode contains functions for automated Tafel Plot of Polarization Curves instantly providing:
▪ Corrosion Potential
▪ Corrosion Current
▪ Tafel Slopes
▪ Corrosion Rate
Electrochemical Impedance Spectroscopy (EIS) allows observing:
▪ Changes on Surface Properties
▪ Pitting Corrosion
▪ Water uptake of a coating
▪ Estimation of Delamination Area
▪ Estimation of Time to Failure
This Kit will provide you a standard corrosion cell with a sample holder for metal coupons (up to 15 mm diameter) exposing 1 cm diameter round area to the solution as well as the equipment for the Stern-Makrides arrangement. This cell is suitable for many common corrosion related measurements. The Corrosion Cell Set is made by ItalSens and contains:
• 1 x 1 L glass vessel
• 2 x graphite counter electrode 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
If you are looking for more options to gain the maximum efficiency out of your EmStat3+ Blue, the following accessories are interesting for you:
If you are just starting starting with electrochemistry or you 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 tutorials in this more than 40 pages document want to explain some basic knowledge of corrosion research with a focus on Linear Polarization Curves and Electrochemical Impedance Spectroscopy EIS. Furthermore it should afterwards be possible to have a general idea of what can be read from the Tafel plot and the EIS spectrum. Some typical shapes of curves and spectra will be shown, to develop some feeling for possible phenomena and indicators.
Parts of the handbook can be found in the Tutorials section.