The USB4000-UV-VIS Spectrometer is pre-set to a 200-850 nm wavelength range and comes with a UV2 Detector Upgrade, a multi-bandpass order-sorting detector coating and a 25 mm entrance slit for optical resolution to 1.5 nm (FWHM). Operating software is included.

Detector:	3648-element Toshiba TCD1304AP Linear CCD array
Useable range:	200-850 nm (grating-dependent)
Dynamic range:	2 x 108
Sensitivity (estimate):	400 nm: 130 photons/count 600 nm: 60 photons/count
Signal-to-Noise:	300:1 (at full signal)
Dark noise:	12 RMS counts

Grating:	600 lines/mm, set to 200-850 nm (blazed at 300 nm)
Slit:	25 mm width (height is 1000 mm)
Focal length:	42 mm (input); 68 mm (output)
Order-sorting:	Single-piece, multi-bandpass detector coating to eliminate second-order effects from 200-850 nm
Resolution:	1.5 nm (FWHM)
Stray light:	< 0.05% at 600 nm < 0.10% at 435 nm < 0.10% at 250 nm