SPECTROPHOTOMETER uniSPEC 4 UV/VISIBLE 110V 60HZ, 220V 50HZModel uniSPEC 4 Wavelength range nm 190 to 1100 Bandwidth nm 1. 8 Wavelength accuracy nm 0. 3 Wavelength repeatability nm 0. 2 Wavelength setting Automatic Photometric accuracy %T 0. 3 Photometric repeatability %T 0. 2 Photometric ranges Abs 0. 3 to 3 Abs (absorption units) %T 0 to 199. 9% T (transmission) C 0 to 9999 C (concentration) Photometric stability (at 500nm) A hour 0. 002 Straylight %T 0. 05 (at 220nm, 360nm) Measurement modes Kinetics,