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4.3.17 Gal. Expert EIS (Impedance)This expert-dedicated method allows to edit up to 3 segments along the frequencyrange with the following appropriate parameters: Frequency scan limits, ACamplitude, Frequency resolution (Freq. per decade), Number of measurementrepetitions or number of sine waves upon which frequency is considered (Repeatmeas.), Number of measurements taken for the mean calculation (Average last)and Delay before integration.The Gal. Expert EIS method will deliver accurate results as you can allow moretime for stabilisation and integration when you need it.The WORK DC current can be set at ±1.25 A, ±2.5 A, ±5 A, ±10 A, ± 20 Adepending on the High Current Booster used. The Electrochemical ImpedanceSpectrum can be recorded from 40 kHz down to 1 mHz with a resolution of up to 20points per decade of frequencies. The AC current amplitude can be set from 0.5 %up to 10 % of the current range provided that DC + AC current is within the range±1.25 A, ±2.5 A, ±5 A, ±10 A, ± 20 A depending on the High Current Booster used.Nyquist or Bode diagrams are available as a real-time plot display.Only one file is generated. Method available with VoltaLab 80 associated with aHigh Current Booster.Consult the Help file, keyword indexes:Gal. Expert EIS (Impedance) - Method editing and Gal. Expert EIS (Impedance)- Measurements and curve files.4.3.18 Pitting corrosionThe potential is scanned in anodic or cathodic direction from the rest potential orfrom a slightly cathodic potential at a given slow scan rate. The current is measuredversus the imposed potential. When the current reaches a user-selectable limitvalue, the experiment can be stopped or the potential can be held for a given timethen reversed. The experiment stops when a potential or a current value has beenreached. The voltammetric curve is stored.Consult the Help file, keyword indexes:Pitting corrosion - Method editing and Pitting corrosion - Measurements andcurve files.VoltaMaster 4 - Version 7.0x 51Section 4, Chapter 3: Methods available