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Libra S21


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Libra S21 and S22 Visible and UV/Visible Spectrophotometers:

Rapid System Operation

Libra S21 and S22 are simple-to-use instruments with advanced performance, incorporating xenon lamp technology for longer source lifetime and lower maintenance costs. A further benefit of this design is optical noise compensation to improve signal to background measurements. Instrument Performance Validation (IPV) is included as standard, and will benefit any laboratory that needs to prove the quality of their results.

In addition to measuring absorbance, transmittance and concentration, they provide a standard curve routine for analyte determination. Wavelength scan, absorbance changes with time, reaction rate determinations and standard curves can be displayed as graphics and printed out. User defined equations can be entered using multi-wavelength mode and methods can be saved in separate operator folders. The instrument can be upgraded for more sophisticated applications, as well as data manipulation, with Acquire Software and a PC.

With its large sample compartment and wide range of accessories, Libra S21 and S22 are versatile and reliable instruments for use in any laboratory performing general-purpose measurements.

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  • Press To Read (PTR) xenon lamp technology
  • Reference Beam Compensation (RBC)
  • Instrument Performance Validation (IPV) facility
  • 8-position sample changer as standard
  • Rapid System Operation
Technical Information

Libra S21

Libra S22


Xenon Press to read (PTR)

Xenon Press to read (PTR)


Reference beam compensation (RBC)

Reference beam compensation (RBC)

Wavelength range

325 -1100 nm

190 -1100 nm


< 3 nm

< 3 nm

Absorbance range

-3.000 to 3.000

-3.000 to 3.000

Ordering Information

Product Code 80-2115-25

Product Code 80-2115-20


Bandwidth: <3nm
Wavelength range: 325-1100nm
Beam: split
Wavelength selection: monochromator
Light source: Xenon flash lamp