L7 Double Beam UV-VIS Spectrophotometer

L7 double beam UV-VIS spectrophotometers adopt double beam optical system, and blazed holographic gratings. 

They have outstanding test precision and very competitive prices. 8-inch color touch-screen, cutting-edge user interface, powerful functions, and easy operation. 
With powerful functions, the equipment shows great performance in qualitative and quantitative testing, such as: 
● Full-spectrum scanning 
● Linear regression 
● Detailed spectrum scanning
● Concentration on direct reading 
● Time-based kinetics determination 
● Peak / Valley detecting 
● GOTO λ 
● Multi-wavelength measurement 

L7 Manual
L7 Brochure

Features of L7 Double Beam UV-VIS Spectrophotometer

The equipment is designed with a sophisticated power protection system. With a high capacity of internal memory, it can store testing results, scanned images, regression equations, and correction data. Therefore, it follows a fast initialization when the power is on.

The instrument can draw curves from spectral scanning, fixed wavelength time-based scanning and linear regression.

With a USB COM port, the device can be connected to a PC, which can not only enhance the performance in data testing and spectrum scanning but also expand the memory to save more testing results.

  • Double beam optical system 
  • 8-inch color touch-screen 
  • Automatic zero and full-scale adjustment 
  • Automatic wavelength settings 
  • Equipped with USB COM port 
  • UV WIN8 Spectrum Data Processing Software optional

Specifications of L7 Double Beam UV-VIS Spectrophotometer

ModelL7
PhotometryDouble Beam
Monochromator TypeCzerny-Turner
Focal Length160mm
Grating1200 lines/mm
DetectorSilicon Photocell
Spectrum Bandwidth1.8nm
Wavelength Setting8-inch color touch-screen
Wavelength Range190-1100nm
Wavelength Accuracy±0.3nm
Wavelength Repeatability≤0.1nm
Scanning SpeedFast-Medium-Slow
Stray Light≤0.03%T (at 220nm NaI, 360nm NaNo2)
Photometric Range0.0-200.0% T
0.301-4.000 A
0.000-9999 C
Photometric Accuracy±0.3% T
±0.004 Abs (0-0.A)
±0.008 Abs (0.5-A)
Photometric Repeatability≤0.15% T
0.001 Abs (0-0.5A)
0.002 Abs (0.5-1A)
Baseline≤±0.002 A(200-1090nm)
Noise100% (T) noise≤0.15%(T), 0% (T) noise≤0.1%(T)
Drifting≤0.0009 Abs/h (250nm and 500nm after 2h warm up)
PowerAC220V±22V 50Hz±1Hz, 200W
Packaging Size710mm X 590mm X 505mm 0.21m³ 36kg

Standard Accessories of L7 Double Beam UV-VIS Spectrophotometer

  • Operation manual 1pc
  • Glass cuvette 10mm 4pcs
  • Quartz cuvette 10mm 2pcs
  • Power cable 1pc
  • Fuse 2pcs
  • Cuvette holder 10mm

Optional Accessories of L7 Double Beam UV-VIS Spectrophotometer

  • UV WIN8 station pro software
  • NO optional cuvette holder