1. Double Beam Optics (Dual Silicon Photodiode detectors)
2. Sealed optical bench for protection and low stray light
3. Wavelength range : 190~1100nm
4. Wavelength Accuracy : ±0.1nm (D2 peak 656.1nm)
5. Spectral Bandwidth : Variable (0.5, 1, 2, 5, 20nm)
6. USB Communications Interface

Specifications
 - Wavelength range : 190~1100nm
 - Absorbance range : ±4A
 - Stray Light : < 1.0% (198 nm KCl), < 0.02% (220  nm Nal), < 0.02% (340 nm NaNO2 ), < 1.0% (300 nm Acetone)
 - Bandwidth : 0.5, 1, 2, 5, 20nm variable
 - Wavelength accuracy : ±0.1nm (D2 peak 656.1nm)
 - Wavelength reproducibility : <0.1 nm (10 measurements at 656.1 nm, SD)
 - Photometric accuracy : ±  0.002A (0.2 A), ±  0.002A (0.5 A), ±  0.004A (1 A), ±  0.01A (60 mg/L PDC), ±  0.01A (430 nm, 600 mg/L PDC)
 - Photometric reproducibility : < 0.001 A (At 0.5 A), < 0.001 A (At 1 A), < 0.001 A (60 mg/L PDC)
 - Photometric drift : <0.0003A/hour at 1A, 500nm
 - Photometric noise (RMS) : <0.00005A at 700nm, 1nm slit
 - Source : Deuterium & Tungsten