LIBRA S4 Spectrophotometer supplied with mains lead, starter pack of cuvettes and instruction manual; Wavelength Range : 330 - 800nm; Bandwidth : 7nm; Accuracy : - 2.0nm; Photometric Accuracy : 0.01A@1A; Resolution : 0.01A; Absorbance Range: 0.3 -1.999A

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)

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 (32-bit PC compatible) 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.