Specifications: 

• Detection type: Double-beam photometer
• Light source: Deuterium lamp
• Noise: ± 0.75 x 10 -5 AU, at 254 nm
• Drift: 3 x 10-4AU/hr, at 254 nm
• Linearity: >2 AU upper limit
• Wavelength range: 190-600 nm
• Wavelength accuracy: ± 1 nm, self-calibration with deuterium lines, verification with holmium oxide filter
• Wavelength bandwidth: 6.5 nm typical over whole wavelength range
• Maximum data rate: 55 Hz