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4.3.31 Gal. Linear VThe Gal. Linear V is a linear E = f(i) voltammetry between two applied current setpoints. The current is swept at a given rate and the potential is measured. The scanrate can be programmed up to 99 999 µA/s. The step amplitude and step durationare determined from the potential limits and the scan rate entered. Points are savedat a selectable rate (as many as 1 in 32 points). Method available with VoltaLab 40,VoltaLab 50 and VoltaLab 80.Consult the Help file, keyword indexes:Gal. Linear V - Method editing and Gal. Linear V - Measurements and curvefiles.4.3.32 Tast polaroThe Tast polaro is a step by step linear i=f(E) voltammetry which can renew themercury drop of a polarographic stand at each potential step. For this application,the hammer stroke device of the polarographic stand is to be connected to theD/A OUT socket of the PGZ potentiostat. At each step applied, the D/A OUTsignal is set to “High” for a given time: this triggers a mercury drop renewal. TheRADIOMETER ANALYTICAL MDE150 Polarographic stand can be used for thatpurpose. The potential is swept at a given rate and the current is measured at theend of the step. The scan rate can be programmed up to 400 mV/s by steps of 1mV/s. Autoranging for current measurement is available. Currents are measuredevery 100 ms and one measurement (mean of the last 5 measurements) is savedper potential step. Method available with VoltaLab 06, VoltaLab 10, VoltaLab 40,VoltaLab 50 and VoltaLab 80.Consult the Help file, keyword indexes:Tast polaro - Method editing and Tast polaro - Measurements and curve files.4.3.33 Pot. Low Current CVCyclic voltammetries (and linear voltammetries) sweep the potential at a givenrate and measure the current. The experimental curve obtained is known as apolarisation curve or a “voltammogram”. The scan rate can be programmed up to20 V/s. Currents down to 200 pA with a resolution of 0.3 pA can be measured onthe 10 nA range. Five current ranges are available from 10 nA to 100 µA. Methodavailable with VoltaLab 50 and VoltaLab 80.Consult the Help file, keyword indexes:Pot. Low Current CV - Method editing and Pot. Low Current CV -Measurements and curve files.56VoltaMaster 4 - Version 7.0xSection 4, Chapter 3: Methods available