Double Beam Microprocessor UV/VIS Spectrophotometer

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Model No. – WSPECTRO-11002 Make – WESWOX


DOUBLE BEAM UV-VIS Spectrophotometer with more accuracy and flexible requirements. The two

detectors are used to measure sample and reference respectively and simultaneously for optimizing

Measurement accuracy. It has wide wavelength range satisfying requirement of various fields, such as

biochemical research and industry, pharmaceuticals analysis and production, education, environment

Protection, food industry etc.



  1. Wide Wavelength range, satisfying requirements of various fields.
  2. Fully automated design, realizing the simplest measurement & satisfying the requirement of pharmacopoeia.
  3. Maximum of 9 Wavelength & 8 samples can be measured at one time.
  4. Automatic change-over between T lamp & D2 lamp.
  5. Optimized optics and large scale integrated circuits design, light source and receiver from world famous measurement methods all add up to high performance and reliability.
  6. Rich measurement methods: wavelength scan, time scan multi-wavelength determination, multi-order derivative determination, double-wavelength methods and triple-wavelength methods etc, meet difference measurement requirement.
  7. Automatic 10mm 8-cell holder.
  8. Data Output can be obtained via a printer port and a USB interface.
  9. Parameters and data can be saved for user’s convenience.
  10. PC controller measurement can be achieved for more accurate and flexible requirement.




Basic Mode To measure the absorbance and transmittance
Quantitative 1.      Coefficient Method

2.      Standard Curve Up Standard may used to establish a curve. Four methods for fitting a curve through the calibration points: Linear fit. Linear fit through zero, Square fit the cubic fit.

DNA/Protein Test Concentration and DNA purity are quickly and easily calculated: Absorbance rations: 260nm / 280 nm with optional subtracted absorbance at 320 nm. DNA concentration = 1552xA260-757.3xA 280.
Wavelength Scan 1.      The wavelength scan intervals are 0.1,0.2,0.5,1,2.5 nm

2.      High, Medium and low scan speed are available. They vary from 100 to 3600 nm/min

3.      Wavelength are scanned from high to low so that the instrument waits at high WL. And it minimizes the degradation of UV sensitive samples.

Kinetics Abs vs time graphs is display on the screen in real time wait time and measurement time up to 12 hours may be entered with time interval of 0.5,1,2,5,10,30 second and one min. Post-run manipulation includes re-scalling, curve tracking the selection of the part of the curve required for rate calculation. Rate is calculated using a linear regression algorithm before multiplying be the entered factor.






Optical System Double Beam, Grating 1200 lines/mm
Wavelength Range 190nm – 1100nm
Spectral Bandwidth 1nm
Wavelength Accuracy <=+/0.1nm (656.1nmD2),<=+/0.3nm(full wavelength Range)
Wavelength Repeatability 0.1nm
Photometric Accuracy ±0.3%T(0-100%T)
Photometric Repeatability 0.001Abs(0~0.5Abs)
Photometric Range -0.3A~3A
Stray Light <=0.02%T(220nm,nal,340nm NaMO2)
Stability ±0.0004 A/H@500nm
Baseline Flatness ±0.001A
Noise 0.0003 A/H
Scanning Speed Fast, Mid, Slow
Wavelength Setting AUTO
Keyboard Membrane Keypad
Light Source Deuterium & Tungsten Lamp
Wavelength Resolution 0.1nm
Photometric Mode A,T,C
Detector Imported Silicon Photodiode
Interface USB Portandparallelport (Printer)
Power AC 220V/50Hz or AC 110V/60Hz
Dimension 590x460x220mm
Weight 25kg
Drift <=+/0.0004A bs/h
Cell Holder 8 Cell Holder



Operating Manual 1 no.
Glass Cell 4 no.
Quartz Cells 2 no.
Dust Cover 1 no.
Software Cover 1 no.
Software CD
Software Manual 1 no.
USB Cable 1 no.
Software Key 1 no.
Power Cable 1 no.


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