Which ICP-OES Optical Technology Offers Superior Performance: Echelle or ORCA?

SPECTRO Analytical Instruments GmbH

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Schematic of a typical echelle system

Plasma, radial view

ORCA captures the entire spectrum

ORCA-based systems display a constant resolution over a wide wavelength range

The heart of any ICP-OES instrument is the optical system. So it’s important that scientists, lab managers, and other users understand some salient facts about a very critical component of these instruments. This knowledge will help users choose the best spectrometer for their laboratory.

This paper explains the fundamental differences between the two leading optical designs and discusses how each technology deals with technical challenges such as light loss, stray light, spectral order overlaps, and others.

The paper also explains how each can potentially affect the outcome of various analyses. Application examples and analytical results are included.

Facts, background information, dossiers
  • Echelle technology
  • Optimized Rowland C…
  • diffraction grating
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