Scanning UV-Vis Spectrophotometer BK-UV1900 PC

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  • With SiO2 coating optical mirror, reducing the pollution from outside fully.
  • Adopted high-class grating with wholly hermetic light path design, to ensure the instrument has the super low stray light.
  • With GLP self-check function, check the wavelength accuracy and Photometry accuracy.
  • Real-time monitoring the lifetime of Deuterium lamp and Tungsten lamp with advanced system.
  • Wavelength calibration, wavelength setting, change lamp source and dark current calibration automatically.

Basic Functions


Test Abs., Transmittance and Energy by fixed wavelength



Linear fit and Linear fit through zero two modes

  1. Coefficient, Standard Sample input and Standard Sample read three modes to establish standard curve
  2. Establish A=K1*C+K0, can search original data, graph curve, parameters settings
  3. Can save 240 group curves, can test 240 data in each curve
  4. Double wavelength, Triple wavelength test functions



Used for time course scanning or reaction rate calculations△A/t, can search all data.



Can test Transmittance and Abs. with 8 different wavelengths at most



User can set the scan range from 190nm to 1100nm to test the max. Abs. peak value, can do derivation, arithmetical operationsto the graph.



6 methods: DNA/Protein, UV, Lowry, BCA,CBB and Biuret

Technical Parameters

Model BK-UV1900




Optical System Single Beam, Grating 1200 lines/mm
Wavelength Range 190~1100nm 320~1100nm
Spectral Bandwidth 2nm
Wavelength Accuracy ± 0.5nm
Wavelength Repeatability ≤ 0.3nm
Photometric Accuracy ± 0.002A (0~0.5Abs), ± 0.004A (0.5~1.0Abs), ± 0.5% T (0~100% T)
Photometric Repeatability 0.001Abs (0~0.5Abs), 0.002Abs (0.5~1.0Abs), ≤ 0.2% T (0~100% T)
Stray Light ≤ 0.05% T @ 360nm; 220nm
Stability ± 0.0008A / h @ 500nm
Baseline Flatness ± 0.002A
Noise 0.0005Abs  @ 500nm
Display 480 *272  65 thousand true color TFT LCD
Photometric Mode T, A, C, E
Photometric Range 0~200% T,-0.301~3.0A
Detector Silicon Photodiode
Light Source Deuterium Lamp, Tungsten Lamp
Input Membrane Keypad
Output USB2.0*2 Print and data output  USB1.0 Connect PC
Standard Accessories 10mm glass cuvette *4 units 10mm quartz cuvette *2 units 10mm glass uvette *4 units
Optional Accessories Single cell holder,General cell holder,Test tube holder,Solid sample holder,Deuterium lamp,Halogen lamp,4-place Cell holder,Printer,Water-jacketedcell holder,Reflection accessory 5°,Auto 8-cell changer,Micro cell holder,Water-jacketed cell holder,Constant-temperature system
Power Supply AC110V/220±10% ,60/50Hz
Packing Size(mm) 620*500*370 620*500*370
Gross Weight(kg) 18 16.5