Fundamentals6 min read
What is a potentiostat and how does it work?
Three-electrode cell, control amplifier and current measurement: the operating principle of the potentiostat/galvanostat and the criteria for choosing one.
Learning Center
Knowledge Library, technical articles, guides, glossary and frequently asked questions. Content has been checked for scientific accuracy; links to manufacturer documents are on the product pages.
From zero to advanced
Start the curriculumCurriculum
12 modules, 28 lessons: from the fundamentals of electrochemistry to EIS, batteries, corrosion, fuel cells, materials and scanning probe techniques; peer-reviewed sources and measurement instruments under every lesson.
Hands-on
Go to the libraryKnowledge Library
Question-and-answer guides compiled from more than 100 application notes and organised by topic: which measurement is done how, and with which instrument?
Technical articles
Techniques8 min read
How does EIS (electrochemical impedance spectroscopy) work?
Small-amplitude AC excitation, Nyquist/Bode representation, equivalent-circuit modelling and the three indicators that validate measurement quality.
Guide7 min read
How to choose a battery test system
Cell format, current/voltage range, number of channels, native EIS and data security: the criteria that determine the right cycling system.
Guide4 min read
Why the number of channels matters in battery research
The balance between statistical significance, test duration and budget: how many channels do you need?
Techniques5 min read
The differences between CV and CA
Cyclic voltammetry versus chronoamperometry: when to use which, and what information each provides.
Guide6 min read
Choosing the right instrument for electrochemical measurements
Application, current/voltage requirement, EIS, number of channels and expansion: a step-by-step selection guide.
Technical documents and software
Product brochures
Bio-Logic brochures and technical documents can be downloaded from the "Documentation" section of the relevant product pages.
Go to productsEC-Lab® / BT-Lab® software
Current software versions, manuals and tutorial videos are provided through the manufacturer's official user portal, mybiologic.net.
my.biologic.netLearning Center and application notes
The Bio-Logic Learning Center contains a large number of articles, application notes and videos.
biologic.net/topicsGlossary of scientific terminology
- Potentiostat
- Instrument that controls the potential of the working electrode relative to the reference electrode.
- Galvanostat
- Instrument that controls the current flowing through the cell and measures the potential.
- EIS
- Electrochemical impedance spectroscopy; frequency-dependent impedance measurement.
- CV
- Cyclic voltammetry; current measurement while the potential is swept linearly back and forth.
- CA / CP
- Chronoamperometry / chronopotentiometry; time response to a potential or current step.
- GCD
- Galvanostatic charge-discharge; battery cycling test.
- CC-CV
- Constant current – constant voltage charging protocol.
- HPPC
- Hybrid Pulse Power Characterization; pulse-based internal resistance/power determination.
- GITT
- Galvanostatic Intermittent Titration Technique; diffusion coefficient determination.
- SOC / SOH
- State of charge / state of health.
- Rp
- Polarization resistance; inversely proportional to corrosion rate.
- Tafel
- Corrosion current determination from the log current–potential relationship.
- RDE / RRDE
- Rotating disc / rotating ring-disc electrode; hydrodynamic voltammetry.
- SECM
- Scanning electrochemical microscopy; spatially resolved reactivity on a surface.
- LEIS
- Localized electrochemical impedance spectroscopy.
- ULC
- Ultra Low Current; 100 fA accuracy option on the 1 pA range (Bio-Logic Premium).
- Floating mode
- The instrument operates isolated from ground; for grounded cells/autoclaves.
- Compliance voltage
- Maximum voltage that can be applied to the counter electrode.
- Booster
- Power unit extending the current/voltage range of the potentiostat.
- Native EIS
- EIS performed in the cycler's own hardware, without a third-party instrument.
- THD / NSD / NSR
- EIS quality indicators: linearity, stationarity and noise criteria.
- Z Fit
- EC-Lab® equivalent-circuit modelling tool.
- MEA
- Membrane electrode assembly (fuel cell / electrolyzer).
- ASSB
- All-solid-state battery.
Frequently asked questions
Which products does Entek Elektronik manufacture, and for which is it a distributor?
Entek Elektronik designs and manufactures instruments such as the potentiostat/galvanostat, polarographic analyzer, FPP 510 / FPP 630T four point probe systems, C-4 cell stand, RDE and CGME in Ankara. It is the authorized Turkey distributor of Bio-Logic Science Instruments (France). The manufacturer is clearly stated on every product page.
How does the quotation process work?
The 'Request a quote' button on a product page fills the model into the form automatically. Name, institution, institutional e-mail and a description of the request are sufficient. Your request is forwarded to our sales team and you receive a reference number; a technical discussion and a formal quotation follow as soon as possible.
Do you provide installation and training?
Yes. Pre-sales application consulting, on-site installation, EC-Lab® / BT-Lab® software training and after-sales technical support are provided by Entek in Turkish and English.
What are the warranty and service conditions?
Bio-Logic instruments are delivered with the manufacturer's warranty, Entek instruments with Entek's warranty. Fault reports are received through the form on the Technical Support page; the RMA process coordinated with Bio-Logic is handled by Entek. Warranty periods are stated in writing at the quotation stage.
Can a booster or EIS be added to my existing instrument?
Thanks to Bio-Logic's modular design, EIS, additional channels or boosters can be added later to most Essential and Premium instruments (e.g. SP-150e: boosters without a factory upgrade; VMP-300: channels and internal booster boards). Contact our technical team with your instrument's serial number.
In which language are the technical documents?
The Bio-Logic catalog and brochures are in their original English; the Turkish summaries on the product pages were prepared by Entek. The manufacturer's documents are authoritative for official and current technical data.