Biochrom Libra Instruments

Biochrom Libra S70 Double Beam Spectrophotometer

Biochrom Libra S70 Double Beam Spectrophotometer
  • Double beam UV/Vis spectrophotometer covering 190-1100nm
  • 1nm bandwidth  and toluene hexane ratio >2.0 for full EP compliance
  • Colour Touch screen display with easy to use software built in
  • USB ports for method and result storage plus connection to a PC
  • Resolution PC software included. Optional 21CFRpart 11 compliance
  • Available with built in thermal printer, Bluetooth® or both.

Designed for busy multi-user laboratories
The Biochrom Libra S70 model is s robustly designed to deliver reliable, low maintenance UV/Visible spectrophotometry in environments with multiple users in a regulated environment such as method development. Users can quickly and easily walk up to the instrument, set up a sample, select the appropriate measurement protocols and collect the results. Store data and methods onboard the instrument or use the convenient USB port that enables individual users to load personal methods and transport data. 21CFR Part 11 compliance via the optional Resolution software.

Easy to use
Colour touch screen user interface with menu driven software and simple intuitive icons is easy to both use and to learn. Results can be easly transported to a remote PC by memory stick for analysis later, or link to a PC directly with PVC software (included). Full PC control with Resolution software

Built in Software
Full suite of software applications provided as standard with real choice of data export methods. Trace Manager enables you to manipulate  data stored on the instrument or USB memory stick. Multi level user log on facility allows supervisors to restrict access to software functionality allowing secure methods to be set up.

Software Modules Function
Single Wavelength Measurement Fixed wavelength, Abs/%T, and Concentration (factor)
Sample overlays, automatic feature detection and post run data manipulation
Concentration Standard Curve Quantitation using calibration curves with multiple standards and a choice of curve fits
Kinetics Serial (or parallel measurements with optional cell changer) including sample overlays and post run data manipulation
Life Science
DNA, RNA & Oligo concentration and purity measurement with optional wavelength scanning. CyDyeTM DNA quantitation. Tm calculation. Protein concentration by direct UV measurement or Bradford, Biuret, Lowry or BCA colorimetric methods
Equation Editor Turn your instrument into a "custom application analyzer" by setting up stored methods including calculations based on measured sample data, for example: Absorbance difference and ratios.

Easy to Connect
Two USB ports are provided as standard. One is conveniently located by the user touchscreen to enable USB memory sticks (flash-drives) to be be used to both store data and methods in secure and ASCII formats. Particularly useful for laboratories wishing to clone methods between multiple instruments. The other USB port is on the side of the instrument is used for PC communication, control, software update and print via computer (PVC). All stand-alone Biochrom Libra instruments offer users a choice in export and print functionality with selection parameters stored as part of any method.

  • Export to PC via USB cable (standard)
  • Built in printer (optional)
  • Export to a PC via Bluetooth (optional)
  • Full PC control with Resolution Software (included)

Resolution PC Software
Supplied with the Biochrom Libra S70 Resolution PC software offers users extra flexibility on data collection and manipulation. Resolution has the power to work in the way you want and includes modules for fixed wavelength, wavelength scanning, kinetics and quantitation measurements plus a validation routine for checking instrument performance. Data export options include Microsoft Word and Excel® plus Adobe® PDF formats. Optional upgrade modules are also available including Resolution Life for Nucleic Acid and protein measurement and Resolution CFR for 21 CFR part 11 compliance.

Superb Optical Design
High energy throughput double beam optical system with fixed 1nm bandwidth gives users the flexibility and performance to measure demanding sample types whilst ensuring EP Compliance.

Cell Holders
The Biochrom Libra S70 is supplied with 10mm pathlength cell holders in sample and reference positions

The sample compartment is designed for use with a wide range of accessories. All are designed to be easily changed by users with the minimum of tools. See Biochrom Libra Double Beam Accessories for a full list of optional accessories with order codes.

Spare Parts
80-7000-50 Spare Deuterium Lamp
80-7000-51 Spare Tungsten Lamp
80-3004-07 Spare Printer paper for Built in Printer (20 rolls)

Full technical specifications shown below, optional accessories marked *

Technical Specifications
Specification Data
Type UV/Vis 
Wavelength Range 190 - 1100nm 
Wavelength Accuracy (+/-) ± 0.3nm across wavelength range 
Wavelength Reproducibility (+/-) ± 0.1nm 
Lamp Source Deuterium/Tungsten 
Beam Double Beam 
Optical System Czerny-Turner Monochromator 
Bandwidth 1nm 
Detector Dual Solid State Silicon photodiode 
Photometric Range -4.000A to 4.000A 
Stray Light <0.025%T at 220nm (NaI), <0.025%T at 340nm (NaNO2), <1%T at 198nm & 200nm (KCl) 
Zero Stability ± 0.0003 A/hr at 500nm in precision mode 
Baseline Flatness ± 0.001A 220 to 900nm 
Measurement Type Fixed Wavelength, Abs/%T, Abs ratio, Abs difference, concentration (standard curve), concentration (factor), multiwavelength, kinetics, Life Science Methods, user log-on, Equation editor 
Cell Compatibility Cuvette, Microcell*, Variable Pathlength Cell* 
Other Sample Containers Test Tube* 
Cell Holder Dual (sample and reference), 8 cell changer*, 5 position heated cell changer*, variable pathlength cell holder* 
Accessory Options Film holder* 
Method Storage Up to 90 on-board, unlimited via USB 
Compliance European Pharmacopoeia, IQ/OQ*, 21CFR part 11* 
Data Output Store, Print*, USB Drive*, Export to PC, PC Control* 
Display Colour Touchscreen 
Data Interface USB 
Languages English, French, German, Spanish 
Power Requirement 100-240V AC, 50/60Hz, 150VA 
Weight 18Kg (39.7lb) 
Dimensions (WxDxH) 535 x 440 x 335mm (21.3 x 18.1 x 13.2 inches) 
Noise <0.002A peak to peak, 0.0005A RMS near 2A at 500nm. <0.00005A RMS at 0A at 500nm over 20 measurements 
Photometric Accuracy ± 0.002A at 0.5A, ± 0.004A at 1A, ± 0.006A at 2A at 440nm, 456nm, 546.1nm, 590nm, 635nm ± 0.005A using 60mg/L K2Cr2O7 
Photometric Reproducibility ± 0.002A at 1A 
Spectral Scanning Yes (up to 1100nm) 
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