Category: Microplate Readers Subcategory: Readers

Molecular Devices SpectraMax Gemini XS Fluorescence Microplate Reader

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Product Details

Molecular Devices SpectraMax Gemini XS Fluorescence Microplate Reader

The Gemini XS spectrofluorometer allows for fast, high-sensitivity measurements. Cellular and molecular binding studies, DNA quantitation, drug screening, and SNP genotyping analysis all require a high degree of sensitivity. The Gemini system offers a flexible, filter-free environment allowing the determination of optimal excitation and emission settings in 1.0 nm increments providing the best level of sensitivity for variable assay conditions. 

Instrument Description and Capabilities:

  • Fluorescence
  • Time Resolved Fluorescence TRF
  • Fluorescence Intensity top and bottom capabilities FI
  • Fluorescence filters included in 1nm range
  • Temperature control and microplate-shaking included
  • Adjustable bandwidth range
  • Luminescence glow reading mode
  • 6-384-well plate capability


  • Cellular and molecular binding studies
  • Nucleic acid quantitation
  • Cytoxicity assays
  • SNP genotype detection and molecular beacons
  • Enzyme activity
  • CatchPoint® cAMP Assay Kit


  • Dual Monochromators — The right pair of excitation and emission wavelengths is always available because the dual monochromators allow the selection of any wavelength in 1 nm increments. New fluorophores can easily be evaluated without purchasing additional filters.
  • Wavelength Scanning — The most sensitive results are achieved by using optimal excitation and emission wavelengths. Literature wavelengths are often based on results from wavelength-limited, filter-based readers. Wavelength scanning ensures that the most sensitive assay conditions are used.
  • Well Scanning — Gemini XS can report a single point from the well center, or multiple data points from large well tissue culture plates. This provides high sensitivity for cell-based assays.
  • Auto PMT Gain — Because a single microplate often presents a range of fluorescence intensities greater than three orders of magnitude, Gemini XS features “Auto PMT Gain” to avoid saturating the photomultiplier tube. The signal is calibrated against an internal standard, so the reported RFU values of individual samples can be accurately compared.

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