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Dionex ESA Corona Ultra CAD Charged Aerosol Detector
$2,950.00
In Stock
The Dionex ESA Corona Ultra CAD Charged Aerosol Detector (70-8238) provides near-universal HPLC detection independent of chemical structure, detecting non-volatile and semi-volatile analytes with or without a chromophore. It features a 100 Hz acquisition rate and reduced peak dispersion for UHPLC-speed performance. Refurbished and tested by Alliant Scientific.
Listing last updated: August 2026
Description
Dionex ESA Corona Ultra CAD Charged Aerosol Detector Overview
Charged aerosol detection is a non-optical HPLC detection technology derived from proven particle characterization techniques. Because the entire process involves particles and direct measurement of charge, the Corona CAD detector delivers response independent of chemical structure — a key advantage over UV detection, which depends on chromophores, and over mass spec, where ionization efficiency varies widely between compounds.
The Corona Ultra adds reduced peak dispersion and a 100 Hz acquisition rate over the standard Corona CAD, delivering the speed and resolution needed for UHPLC-paced analysis of any non-volatile or semi-volatile analyte, with or without a chromophore. It’s fully gradient compatible and works with standard HPLC or UHPLC systems with no modifications necessary.
With detection down to low nanogram levels and a dynamic range spanning over four orders of magnitude, the Corona Ultra CAD is well suited as a primary detector or as a complement to UV or mass spectrometric detection.
This Dionex ESA Corona Ultra CAD Charged Aerosol Detector is offered fully refurbished and tested, in working condition by Alliant Scientific.
Includes:
- Dionex ESA Corona Ultra CAD Charged Aerosol Detector (70-8238)
- 30-Day Warranty
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Looking for other detector options? Browse our full selection of liquid chromatography (HPLC) equipment, including UV, PDA, ELSD, and CAD detectors.
Technical Specifications
| Manufacturer | Dionex (Thermo Scientific) |
| Model | Corona Ultra CAD (70-8238) |
| Detector Type | Charged Aerosol Detector (CAD) |
| Acquisition Rate | 100 Hz |
| Mobile Phase Flow Rate | Up to 2 mL/min |
| Full Scale Output Range | 1 pA to 470 pA |
| Filter Time Constants | None, Low, Medium, High |
| Signal Output | 0 V to 1 V DC |
| Output Resolution | 0.12 μV at 1 V full scale (24-bit bipolar) |
| Method Storage | Up to 25 methods |
| Dynamic Range | Over 4 orders of magnitude |
| Sensitivity | Low nanogram levels |
| Power | 100–240 VAC, 50/60 Hz, 100 VA |
| Operating Pressure | 35 psi (3.5 MPa) |
| Gas Flow Rate | 4 L/min |
| Dimensions (L x W x H) | 20.5" x 9" x 11.25" (52.5 x 23 x 28.6 cm) |
| Weight | 22 lbs (10 kg) |
| Certifications | CE, UL, CSA, FCC |
| Condition | Refurbished and tested |
| Warranty | 30 days |
Additional information
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Key Features
- Universal Detection Independent of Chemical Structure
Detects virtually any non-volatile and many semi-volatile analytes, with or without a chromophore. - High-Speed Acquisition
100 Hz acquisition rate with reduced peak dispersion for UHPLC-speed performance. - High Sensitivity
Detects analytes at low nanogram levels. - Wide Dynamic Range
Spans over four orders of magnitude, measuring ng–µg quantities in real samples. - Fully Gradient Compatible
Works with standard HPLC or UHPLC systems with no modifications necessary. - Predictable, Consistent Response
Response independent of chemical structure simplifies method development.
Applications
- Lipid and Carbohydrate Analysis
Near-universal detection for non-chromophoric compounds like sugars and lipids. - Surfactant and Polymer Analysis
Detects structurally diverse, non-UV-active analytes. - Pharmaceutical Analysis
Complements UV or mass spec detection for compound confirmation. - Method Development
Predictable response simplifies development of new HPLC methods.
FAQ (Frequently Asked Questions)
What is a Charged Aerosol Detector (CAD) used for?
A CAD detects non-volatile and semi-volatile compounds independent of chemical structure, making it useful for analytes like lipids, carbohydrates, surfactants, and polymers that lack a UV chromophore.
How does the Corona Ultra differ from the standard Corona CAD?
The Corona Ultra adds a 100 Hz acquisition rate and reduced peak dispersion, delivering UHPLC-speed performance not available on the standard Corona CAD.
What is the maximum flow rate this detector supports?
Up to 2 mL/min mobile phase flow rate.
Is this detector compatible with gradient HPLC methods?
Yes — it’s fully gradient compatible and works with both standard HPLC and UHPLC systems with no modifications necessary.
Does this unit include a warranty?
Yes — this unit ships with a 30-day warranty.
