Biochrom Libra Instruments

Biochrom Libra S12 UV/Vis Spectrophotometer

Biochrom Libra S12 UV/Vis Spectrophotometer


  • Single Beam UV/Vis spectrophotometer covering 200-999nm (5nm bandwidth)
  • Lamp saver mode
  • Customizable user interface and method storage
  • Automatic system calibration
  • Wide range of sample handling accessories

The instrument has absorbance, transmittance, absorbance ratio and factor concentration modes, as well as absorbance against time and scanning capabilities. The benefits of enhanced software functionality, including standard curve mode, reaction rate slope calculation, multi-wavelength equation definition and storage of user defined methods, will be useful in the QC laboratory. Graphics are displayed and can be printed out for the scan, kinetics and standard curve routines.   

The instrument start-up menu may be customised by the laboratory manager in order to meet the applications requirements of the laboratory. As measurement needs change, the menu can be altered accordingly. The compact design saves precious bench space.

All results can be downloaded directly to Excel if required using the optional spreadsheet interface. Alternatively it may be linked to a chart recorder or used with a parallel output printer. The instruments can be under full PC control when used with  Acquire Lite PC-based software to expand the capability of the instrument including modules for wavelength scanning, kinetics and quantification. If using Seiko's DPU 414 thermal printer, power supply is sold separately.

Wide range of accessories
See Biochrom Libra Accessories for order codes for:

  • Cell changers:  2 position, heated electrical (Peltier) or by water circulation
  • Single cell holders: test tube holders, water or electrically  heated, cylindrical
Ordering Information Order Code
Biochrom Libra S12 Visible Spectrophotometer Discontinued. Please contact us for replacement options.
Acquire Lite applications software 80-2112-24
Spreadsheet interface software with serial adapter 80-2109-02
Seiko DPU-414 thermal printer 80-2108-80
Parallel printer cable 80-2071-87
United Kingdom Power Supply for Seiko DPU-414 Printer 80-2119-80
United States Power Supply for Seiko DPU-414 Printer 80-2119-81
Europe Power Supply for Seiko DPU-414 Printer 80-2119-82
China Power Supply for Seiko DPU-414 Printer 80-2119-83
Korea Power Supply for Seiko DPU-414 Printer 80-2119-84
Australia Power Supply for Seiko DPU-414 Printer 80-2119-85

Spare Parts
80-2106-16   Tungsten halogen lamp  (vertical filament)
80-2109-11   Deuterium lamp
80-2009-80   Thermal printer paper 5 rolls

Order codes for spectrophotometer cells and cuvettes 

Technical Specifications below. Optional accessories shown marked *

Technical Specifications
Specification Data
Type UV/Vis 
Wavelength Range 200 - 999nm 
Wavelength Accuracy (+/-) 2nm 
Wavelength Reproducibility (+/-) 0.5nm 
Lamp Source Deuterium/Tungsten 
Beam Single Beam 
Optical System Monochromator Holographic Grating 
Bandwidth 5nm 
Detector Single state silicon photodiode 
Photometric Range -0.300 to 3.000A, 0.01 to 99999 conc. units, 0.1 to 200%T 
Stray Light <0.10%T at 220nm and 340nm 
Zero Stability ± 0.002A/h at 0A after warm up 
Baseline Flatness  
Measurement Type Fixed Wavelength, Abs/%T, Abs ratio, Abs difference, concentration (standard curve), concentration (factor), multiwavelength, kinetics, Life Science Methods, cell density 
Cell Compatibility Cuvette, Microcell*, Variable Pathlength Cell* 
Other Sample Containers Test Tube* 
Cell Holder Single cell, Cell changer (2 position manual) * 
Accessory Options Cylindrical cell holder* 
Method Storage Up to 9 
Compliance CE 
Data Output Print*, Export to PC*, PC Control* 
Display Graphical LCD 
Data Interface serial, parallel 
Languages English, French, Italian, German and Spanish 
Power Requirement 90-265V AC, 50/60Hz, 100VA 
Weight 6Kg (13.2lb) 
Dimensions (WxDxH) 30 x 40 x 19cm (12 x 16 x 7.5 inches) 
Noise ± 0.001A near 0A and ± 0.002A near 2A at 600nm 
Photometric Accuracy +/- 0.5% or +/- 0.005A to 2.000A at 546nm 
Photometric Reproducibility 0.5% of absorbance value 
Spectral Scanning Yes 
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