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Metrohm – Model 797 VA – Computrace Instrument for Voltammetry Stand for Trace Analysis System

Description

Specification

Potentiate

  • Max. output voltage: ±5 V
  • Max. output current: ±80 mA
  • Voltage feed:

Current measurement techniques

  • DC, DP, SqW, AC1, AC2, NP, CV, PSA, CC-PSA, CVS, CPVS

Working electrode

  • Multi-Mode electrode (MME), can be operated as DME, SMDE or HMDE
  • Rotating disk electrodes (RDE) made of GC, ‘Ultra Trace’ graphite, Pt, Ag, Au

Reference electrode

  • Ag/AgCl/KCl 3 mol/L

Auxiliary electrode

  • Pt
  • Glassy Carbon (GC) as option

Stirrer

  • PTFE, 200 to 3,000 min-1

Interfaces

  • Built-in USB interface
  • MSB interfaces for connecting up to 3 Dosinos or Dosimats
  • Remote interface for the connection of peripheral devices

Software

  • VA Computrace 797 Software 1.3

Data evaluation

  • Peak height (entire peak, front half of peak, rear half of peak)
  • Peak area
  • Charge
  • First derivative

Baseline Types

  • Linear
  • Polynomial
  • Exponential
  • Horizontal

Concentration Determination

  • Standard addition
  • Calibration curve technique (linear or nonlinear regression)
  • Dilution Titration (DT)
  • Linear Approximation Technique (LAT)
  • Modified Linear Approximation Technique (MLAT)
  • Response Curve Technique (RC)

The 797 VA Computrace is a modern voltammetric measuring stand that is connected to a PC via a USB port. The computer software provided controls the measurement, records the measured data and evaluates it. Operation is most straightforward due to the well-laid-out structure of the program. The integrated potentiostat with galvanostat guarantees the highest sensitivity with reduced noise. Voltammetry system for the determination of organic additives in electroplating baths with ‘Cyclic Voltammetric Stripping’ (CVS). Complete accessories with VA Computrace software and all electrodes for a complete measurement system: Rotating platinum disk electrode (RDE), Ag/AgCl reference electrode and Pt auxiliary electrode.

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