Double Beam UV-Vis Spectrophotometer US-B23

The Double Beam UV-Vis Spectrophotometer US-B23 features a broad wavelength range spanning from 190 to 900 nm, ensuring compatibility across diverse fields of study. Its fully automatic design streamlines measurement procedures for user convenience. The spectrophotometer offers versatile measurement methods, including wavelength scanning, time scanning, multi-wavelength measurement, and derivative measurement options, all conveniently displayed on a 6-inch screen. Additionally, various sample holders are available to accommodate user preferences and experimental requirements.

Wavelength Range190 to 900nm
Spectral Bandwidth4nm, 2nm, 1nm, 0.5nm, 0.2nm, 0.1nm
Optical SystemDouble beam
Wavelength Accuracy±0.1nm
Wavelength Reproducibility≤ 0.05nm
Ambient Temperature10℃ to 30℃
Indoor Relative Humidity≤ 85%
Transmittance Accuracy:±0.2% τ(0-100%τ)±0.002A(0~0.5A) ±0.003A(0.5A~1A)
Transmittance Repeatability0.1% τ(0-100%τ)±0.001A(0~0.5A) ±0.0015A(0.5A~1A)
Stray Light≤0.02% τ (220nm NaI,340nm NaNO2)
Stability0.0005A/h(500nm After preheating)
Noise±0.0002A (500nm After preheating)
Baseline Flatness±0.001A
Metering MethodTransmittance, Absorbance, Concentration, Energy
Wavelength AdjustmentAutomatic Adjustment
Photometric Display Range-4 to 4A
Display ModeSix-inch high-brightness LCD Screen
DetectorPhotomultiplier Tubes
Light SourceImported Deuterium Lamp, Imported Tungsten Lamp
Power Consumption120W
Power SupplyAC 220V/50Hz 110V/60Hz
Dimensions (W×D×H)560×450×230mm

  • Work modes include T, A, C, E, and scanning speed range offers Hi, Med, Low (Max. 3000 nm/min)
  • Designed with a double beam 1200 lines/mm optical system
  • In-house massive memory capable of storing up to 1024 M for test data & working curves
  • Features a 10.1-inch high-resolution TFT colored capacitive touch screen and Windows Graphic interface
  • Large sample chamber accommodates 5 to 100 mm cuvettes of all kinds
  • Equipped with powerful functions including Photometric measurement, Quantitative measurement, Kinetics, Spectrum scan, DNA/Protein test, Multi-wavelength test, etc.
  • USB port facilitates data transfer, easily exportable to Excel for further processing
  • Socket type deuterium and tungsten lamp enables lamp switching without optics debugging and easy replacement

It finds widespread application in research facilities, laboratories, educational institutions, pharmaceuticals, hospitals, and medical fields. Its primary uses include diagnosing diseases and detecting impurities in organic compounds.


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