Biochrom Libra Instruments

Biochrom Libra S4+ Visible Spectrophotometer

Biochrom Libra S4+ 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 S4+ visible spectrophotometer is ideal instrument for education and QC laboratories. It is compact, lightweight and ergonomically designed for simpler applications. There is a large display for ease of reading, simple user interface for rapid set up and analysis.

It measures absorbance, % transmission and concentration as well as simple kinetics. The large display allows the user to view results in numerical value as well as a graphical view. The user can view the peak, zoom in and out all on the unit.

Up to 72 methods can be stored providing the user a quick and easy way to recall frequently used methods. These methods can also be locked using a pin protected password, as well as unlocked and deleted.

The S4+ provides the ability to label your sample for easy identification. Your sample can be measured in a test tube using the optional test tube cell holder accommodating test tubes that are 10 to 18 mm in diameter. 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 (10-18mm) 80-3007-12
Heated Cell Holder 80-3007-13

Technical Specification 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 <7 nm 
Detector CMOS Array 
Photometric Range -0.300 to 2.500A 
Stray Light <1%T at 340 nm 
Zero Stability ±005A/hour near 0A 
Baseline Flatness n/a 
Measurement Type Fixed Wavelength, Abs/%T, concentration (factor), kinetics* 
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 72 with PIN number protection 
Compliance CE 
Data Output Export to PC with USB cable, USB memory stick 
Display 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 <0.003 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 N/A 
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