Biochrom Libra Instruments
Biochrom Libra S4 Visible Spectrophotometer

Features
- Single beam diode array Visible spectrophotometer covering 330-800nm
- ideal for basic spectrophotometric measurements
- Easy to use menu driven software
- Educational experiments and UV/Visible tutorial
- Grafico PC utility software included
Description
The Biochrom Libra S4 visible spectrophotometer is the ideal
instrument for education and QC laboratories. The instrument is
compact, lightweight and ergonomically designed for the simpler
applications. There is a large display for ease of reading plus a
very simple user interface for rapid set up and analysis.
The Libra S4 accepts standard 10mm pathlength glass or disposable cuvettes. An optional test tube adapter set is available for 10, 12 and 16mm plus a range of other accessories. In the event of a spill, the cell holder may be removed for cleaning. The instrument is delivered with a starter pack of disposable cuvettes.
Absorbance, % Transmission and concentration can be measured as well as being able to output absorbance–time plots directly to chart recorder. The instrument is delivered with Grafico PC utility software package and a serial lead, providing the student with the means to capture, print and interpret a wavelength scan from the instrument on a PC; the data for the scan or other results may be easily exported from Grafico to Excel. Grafico also includes an educational tutorial on UV/Visible spectrophotometry and the user manual includes simple experiments for the determination of max, extinction coefficient and natural bandwidth plus the construction of a standard curve and the measurement of stray light.
| Ordering Information | Order Code |
| Biochrom Libra S4 Visible Spectrophotometer includes Grafico software, and starter pack of cuvettes | 80-5000-00 |
| S1000P Serial printer with serial cable | 80-3002-53 |
| Test Tube adaptors (10,12 and 16mm) | 80-2117-47 |
| Chart recorder interface cable | 80-3003-55 |
Spare Parts
80-2115-33 Spare
Tungsten lamp
80-3001-25 2 rolls printer paper and ribbon for
S1000P
Technical Specification shown below. Optional accessories marked *
| Specification | Data |
|---|---|
| Type | Visible |
| Wavelength Range | 330 - 800nm |
| Wavelength Accuracy (+/-) | 2nm |
| Wavelength Reproducibility (+/-) | 1nm |
| Lamp Source | Tungsten Halogen |
| Beam | Single Beam |
| Optical System | Diode Array |
| Bandwidth | <7nm |
| Detector | Diode Array |
| Photometric Range | -0.300 to 2.500A |
| Stray Light | <1%T at 340nm |
| Zero Stability | ±005A/hour near 0A |
| Baseline Flatness | n/a |
| Measurement Type | Fixed Wavelength, Abs/%T, concentration (factor), kinetics* |
| Cell Compatibility | Cuvette 10mm |
| Other Sample Containers | Test Tube* (10, 12, 16mm) |
| Cell Holder | Single Cell |
| Accessory Options | None |
| Temperature Control | None |
| Method Storage | None |
| Regulatory Compliance | CE |
| Printer | External via Export*, Chart Recorder* |
| Data Output | Print*, Export to PC* |
| Display | LCD |
| Export/ Data Storage | Serial Cable |
| Data Interface | Serial |
| Languages | English, manuals in French,German, Italian and Spanish |
| Power Requirement | 90-265V AC, 50/60Hz, 15VA |
| Weight | 1.75Kg (3.85lb) |
| Dimensions (WxDxH) | 31 x 23 x 13cm (12.2 x 9.1 x 5.1 inches) |
| Certification | CE |
| Noise | ± 0.002A near 0A and ± 0.020A near 2A at 600nm |
| Photometric Accuracy | <0.002A at 0A at 546nm |
| Photometric Reproducibility | <0.002 at 0A and 546nm |
| Scan Speed | |
| Spectral Scanning | Yes* (Via Graphico software) |





