Biochrom Libra Instruments

Biochrom Libra S6+ Visible Spectrophotometer

Biochrom Libra S6+ Visible Spectrophotometer


  • Single beam visible spectrophotometer covering 325 – 1100 nm
  • Save data on a USB memory stick and analyze results later
  • Test tube and heated cell holder accessories are available
  • PVC (Print Via Computer) software included to allow data transfer to PC from the instrument

Biochrom's Libra S6+ visible spectrophotometer has been designed to meet the routine spectroscopy needs of customers requiring a small, lightweight instruments that is easy to use and includes far more features than similar priced products.

Although compact, it offers powerful onboard software that is functional in viewing and analyzing data. Easy and simple set up is possible through the ease of the navigation process through the applications. The graphical display enables wavelength scans, kinetic assays and standard curves to be viewed. In addition to performing measurements in absorbance, % transmission, and concentration, it includes sorted methods for Bradford, BCA, Biuret and Lowry assays.

The S6+ accepts standard 10 mm pathlength glass or disposable cuvettes. A test tube cell holder is available for test tubes that are 10 to 18 mm in diameter. This enables COD measurements to be made when using a standard 16 mm diameter test tube. A heated cell holder is also available for thermostatted measurements at 37°C.

Data Output

PVC (Print Via Computer) software is included with the instrument providing the user with the option to transfer data directly to a PC. Data can be easily stored on a USB memory stick and analyzed at a later date.

Ordering Information Order Code
Test Tube cell holder (10-18 mm) 80-3007-12
Heated cell holder 80-3007-13

Techincal Specification are shown below, optional accessories marked *

Technical Specifications
Specification Data
Type Visible 
Wavelength Range 325 - 1100 nm 
Wavelength Accuracy (+/-) 2nm 
Wavelength Reproducibility (+/-) 1nm 
Lamp Source Pulsed Tungsten Halogen 
Beam Single Beam 
Optical System Monochromator 
Bandwidth <7nm 
Detector CMOS Array 
Photometric Range -0.300 to 2.500A 
Stray Light <1%T at 340 nm 
Zero Stability ± 0.005A/h near 0A 
Baseline Flatness n/a 
Measurement Type Fixed Wavelength, Abs/%T, Abs ratio, concentration (factor), concentration (standard curve), kinetics, multiwavelength 
Cell Compatibility Cuvette 10 mm 
Other Sample Containers Test Tube cell holder (10-18 mm)* 
Cell Holder Single Cell 
Accessory Options Heated cell holder* 
Method Storage Up to 90 with PIN number protection 
Compliance CE 
Data Output Export to PC* with USB cable, USB memory stick 
Display Graphical LCD 
Data Interface USB Cable 
Languages English, French, German, Italian, Spanish, Chinese and Japanese 
Power Requirement 90-265V AC, 50/60Hz, 15VA 
Weight 1.6Kg (3.5lb) 
Dimensions (WxDxH) 32.5 x 22.5 x 13.3 cm (13 x 9 x 5 inches) 
Noise < 0.002A RMS at 0A and < 0.003A RMS at 1A at 600 nm 
Photometric Accuracy <0.002A at 0A at 546 nm 
Photometric Reproducibility <0.002A at 0A and 500 nm 
Spectral Scanning Yes 
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