Shimadzu UV-2401 PC Spectrophotometer

Wavelength range: 190 to 900nm (performance guaranteed range).
Extendable to 1,100nm through the use of the optional photomultiplier.
(The measurable range may be restricted in the shorter wavelength side depending on the type of photomultiplier used.)
Monochromator system: UV-2401PC: Single monochromator
with a high-performance blazed holographic grating in the aberration corrected Czerny-Turner mounting.
UV-2501PC: Double monochromator with a high-performance double-blazed
holographic grating in the aberration corrected Czerny-Turner mounting.
Resolution: 0.1nm.
Spectral bandwidth: 0.1, 0.2, 0.5, 1, 2 and 5nm.
Wavelength repeatability: ±0.1nm.
Wavelength accuracy: ±0.3nm.
Wavelength scanning speed: FAST, MEDIUM, SLOW and SUPER SLOW.
Light source: 50W halogen lamp (2,000 hours life) and D2 lamp (500 hours life).
Light source lamp switching: Selectable between 282nm and 393nm.
Stray light: Less than 0.015% at 220nm and 340nm.
Detector: Photomultiplier R-928.
Photometric system: Double-beam, direct ratio system with dynode feedback.
Photometric mode: Absorbance (Abs.), transmittance (%), reflectance (%) and energy (E).
Photometric range: Absorbance : -4~5 Abs. (0.001 Abs. increments).
Transmittance: 0~999.9% (0.01% increments).
Reflectance: 0~999.9% (0.01% increments).
Photometric accuracy: ±0.002 Abs. (0~0.5 Abs.) with NIST 930D Filter, ±0.004 Abs. (0.5~1 Abs.)
with NIST 930D Filter, ±0.3%T (0~100%T) with NIST 930D Filter.
Photometric repeatability: ±0.001 Abs. (0~1.0 Abs.), ±0.1%T.
Baseline correction: Selectable with storage in firmware.
Baseline flatness: Within ±0.001 Abs. (excluding noise; 2nm slit width and SLOW wavelength scanning speed).
Drift: Less than 0.0004 Abs. per hour (after 2 hours warm-up).
Power requirements: 100V, 120V, 220V, 240V, switch-selectable; 50/60Hz; 250 VA.