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ELSD Light Scattering Detectors - Sedex 90

Evaporative-Light-Scattering-Detector Sedex 90




The standard ELSD


The light source is a 405 nm laser, which increases the sensitivity
even further. The unique Low-Temperature Technology of Sedere
allows outstanding analytical results to be achieved with this detector.












As an universal detector, an ELSD offers numerous possibilities for detecting substances that have few or no chromophores. Since the eluents are evaporated, the use of non-UV-compatible solvents poses no problems and the ELSD is gradient compatible. 

Complete SOP protocols for GLP conformity and validation procedures are available.

Arrange a date with us for a demonstration and experience the efficiency of this ELSD Sedex 90

Performance characteristics

  • Light source: 10 mW - 405 nm Laser (class 3B)

  • Highest sensitivity by evaporation of the mobile phase at low temperatures
    LOD: 0.5 ng stearic acid on column

  • Improved response characteristics for thermolabile and semi-volatile substances 

  • The digital signal processing minimizes noise and improves sensitivity

  • Control software: gas, heating, photomultiplier and light source are automatically shut off at the end of a series of analyses.
    Driver available for EZChrom, ChemStation, Xcalibur and Clarity.

  • GLP conformity

Further models: 
ELSD Sedex 85    best cost/performance ratio
ELSD Sedex 100  the most sensitive with SAGA
ELSD Sedex LC    the preparative

Function principle

  • Splitting

With the aid of the nebulizer, the mobile phase is transformed into a fine droplet mist. The Sedex LT technology ensures that only the finest droplets enter the evaporation unit. Larger droplets increase the baseline noise considerably.

  • Low evaporation temperature

This discrimination of the larger droplets allows a very low evaporation temperature so that with reduced baseline noise it is possible to detect even semi-volatile substances.

  • GSF™ bundling via inert gas

The mist and the molecules dissolved in it are transported with the aid of GSF (gas supported focusing) to an optical unit for measurement of light-scattering. This bundling of the dissolved particles with the aid of the inert gas allows highly sensitive detection. It also prevents contamination of the optical unit by samples particles.

Nebulizer

(Magnification of the picture by clicking on it)

HPLC:  from 4 µl/min to 4 ml/min with 4 different nebulizers
         
SFC:    1 nebulizer

Special nebulizer clips for micro HPLC, as well as thermostatically controlled 
glass cells on request.

For a list of nebulizers and spare parts please see Sedex accessories

Range of uses

For example, for the detection of:

    *  Carbohydrates and similar compounds
    *  Detergents, ionic and non-ionics
    *  Artificial sweeteners
    *  Antioxidants
    *  Amino acids
    *  Lipids
    *  Peptides
    *  Polymeres
    *  Pestizides
    *  Proteines
    *  Steroides

Drivers

Vendor

Software

SEDEX 85

SEDEX 90

SEDEX 100

SEDEX FP

SEDEX LC

Agilent



ChemStation Edition™

OpenLab ChemStation
Edition™

EZChrom Elite™

OpenLab EZChrom
Edition™

DataApex

Clarity™



Knauer

PurityChrom™5

ChromGate™



Thermo Fisher (Dionex)



Chromeleon™6.8

Chromeleon™7.2

ChromQuest™

Xcalibur™



SCPA

PrepCon™5

Chromstar™7



Specifications

Detection:

Photomultiplier (PMT)

Sensitivity:

0,5 ng 

Light source:

10 mW - 405 nm Laser, Elapsed Time Counter

Nebulizer:

Optimisation by Selectable Nebulizers

Flow rate:

100 µl/min – 5 ml/min

Temperature Range: 

Ambient  to 100°C

Gain Settings:

1 to 12 - Factor 211 (2048)

Filter:

0 to 10s

Output Signal:

Analog 0-1V

Data Rate:

100 Hz

Events:

Contact Closure, TTL, Autozero

Powerdown Methods:

Gas, Light Source, Heating and/or PMT; Cleaning Mode

Computer Interface:

USB, RS-232

Gas Supply:

Nitrogen or or Highly Clean Pressured Air 3,5 bar (less than 3 l/min)

Dimensions:

250 x 480 x 550 mm (W x D x H)

Weight:

18,5 kg

Öffnet einen internen Link im aktuellen FensterSpecifications of all Sedex ELSD's

Legal

Managing Director:
Joachim Paschlau

HRB 135721 München
WEEE-Reg.Nr. DE 66898529

ERC GmbH

Gesellschaft für den Vertrieb wissenschaftlicher Geräte
Otto-Hahn-Strasse 28-30
85521 Riemerling
GERMANY
Tel: +49 89 66055696
Fax: +49 89 60824826
partner@erc-hplc.de