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4.3.1 Open Circuit PotentialThe Open Circuit Potential corresponds to the WORK potential measured versus theREF potential. This method displays the OCP of the sample versus time.Consult the Help file, keyword indexes:Open Circuit Potential - Method editing and Open Circuit Potential -Measurements and curve files.4.3.2 Pot. Tutorial CVThis simplified Pot. Cyclic voltammetry sweeps the potential at a given rate up to300 mV/s (12.5 mV/s for a VoltaLab 21) and measures the current. The experimentalcurve obtained is known as a polarisation curve or a “voltammogram”. The stepamplitude and step duration are determined in order to get the best measurementresolution. These values depend on the mains frequency (50 Hz or 60 Hz) specified inthe “Instrument – Other settings”. Auto ranging for current measurement is availableirrespective of the selected scan rate.Consult the Help file, keyword indexes:Pot. Tutorial CV - Method editing and Pot. Tutorial CV - Measurements andcurve files.4.3.3 Pot. Tutorial CAImposes a potential and measures the current. WORK potential versus REF ismaintained at a Set potential. This selectable Set potential can be equal to the “Free”or to the “Last” potential. The real-time plot displays current versus time like a ChronoAmperometry but potentials are not recorded. Method available with VoltaLab 10,VoltaLab 21, VoltaLab 40 VoltaLab 50 and VoltaLab 80.Consult the Help file, keyword indexes:Pot. Tutorial CA - Method editing and Pot. Tutorial CA - Measurements andcurve files.VoltaMaster 4 - Version 7.0x 45Section 4, Chapter 3: Methods available