Fluorescence Spectrophotometer Model : LI - 4000


Performance Index of the Instrument (Specifications)

Excitation light source

  • High brightness LED

Excitation LED

  • 250nm ~ 600nm(LED)
  • EX wavelength standard set: 365nm,376nm,392nm,405nm

Emission monochromator           

C-T conguration diffraction grating monochromator Emission wavelength range (EM): 200nm ~ 650nm, Bandwidth: 10nm (Extend the monochromator to Em200-900 is optional.)

Emission wavelength accuracy: ± 1nm

 Emission wavelength reproducibility: ≤ 0.5nm

S⁄N ratio

  • S/N≥90(Using 1cm quartz sample cell, measure the signal noise ratio of Raman spectrum of water )

Detection limit

  • 1 × 10-10 g / ml quinine sulfate solution

Linearity (γ)

  • ≥0.995

Repetitive peak intensity

  • ≤1.5%

Zero drift

  • ≤0.3(within 10min)

Upper    limit    change     of

indicating value

  • ≤1.5% (Within 10 minutes) (displaying value≥50)

Power type

  • 220V±22V; 110V±22V


  • 442×392×250mm


  • Net weight 10kg

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