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Instrument Database:
Dionex Corporation - EDA50A Electrochemical Detector
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| Year of introduction |
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| Status |
available |
| Company |
Dionex Corporation
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| Categories |
Chromatography: LC-Detector: Electrochemical
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For excellent sensitivity and selectivity for a wide range of compounds, use the versatile ED50A Electrochemical Detector. Get the benefits of performance and versatility provided through the following unique features:
- Advanced amperometric cell design that incorporates a 1-mm-diameter working electrode for a high signal-to-noise ratio
- Four working electrode options for amperometric cell: gold, platinum, silver, or glassy carbon
- Low-volume amperometric cell that minimizes dispersion
- Corrosion-resistant titanium flow path and counter electrode
- Combination pH-Ag/AgCl reference electrode that minimizes baseline shift with pH gradients
- Optional sodium reference electrode
- Easy remote mounting of either conductivity or amperometry cell
- Conductivity cell geometry that provides excellent accuracy at both low and high conductivities
- Low electrode mass in the conductivity cell that allows for effective temperature compensation for improved reproducibility
- Optional DS3 detection stabilizer provides conductivity measurements nearly impervious to temperature variation for improved reproducibility
- Built-in control for the SRS® Self-Regenerating Suppressor, the most advanced suppressor for eliminating eluent detector background and providing high signal-to-noise
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| Specifications |
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CONDUCTIVITY MODE: Noise
±0.1 nS when background conductivity is 0–10 µS
±1 nS when background conductivity is 10–100 µS
±10 nS when background conductivity is 100–1000 µS
Cell drive
8 kHz square wave
Linearity
1% at 1 mS
Resolution
0.1 nS
Analog output
11 separate ranges from 0.01 to 3000 µS
Flow cell
Electrodes: Passivated 316 stainless steel microelectrodes
Cell Body: Chemically inert polymeric material
Cell Volume: 1.0 µL
Maximum Operating Pressure: 2 MPa (300 psi)
Temperature compensation
Selectable compensation between 0.0 and 3.0% per °C
AMPEROMETRY MODE: Noise
dc amperometry: 1 pA
Integrated amperometry: 20 pC
Potential settings
–2.00 to 2.00 V in 0.01-V increments
Analog output
dc amperometry: 50 pA–300 µA
Integrated amperometry: 50 pC–200 µC
Flow cell
Working Electrode (interchangeable): gold, platinum, silver, or glassy carbon
Counter Electrode: titanium
Reference Electrode: pH-Ag/AgCl combination (standard); Na (optional)
Wetted Materials: PEEK, titanium, Kel-F®, polyetherimide, EPR, glass, high-density polyethylene (HDPE)
Cell Volume at Working Electrode: <0.5 µL
Maximum Operating Pressure: 0.7 MPa (100 psi)
GENERAL SPECS: Electronics
Microprocessor-controlled digital signal processing
Autoranging
Autoranging digital conductivity signal monitoring with Chromeleon software through DX-LAN
Analog output
User-selectable full-scale recorder output of 10, 100, or 1000 mV
Control modes
Local or remote using relay closures, TTL, or by Chromeleon® software through DX-LAN
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