HACH DR/2000 The HACH DR2000 UV/VIS Spectrophotometer is a laboratory instrument with a four digit liquid crystal display. Provides three operator selectable readout modes of absorbance percent transmittance or concentration. Microprocessor controlled to ensure precision and stability. Wavelength range: 400 to 900 nm. Wavelength accuracy: 2 nm at 400 to 700 nm; 3 nm at 700 to 900 nm. Battery: Rechargeable 8 V battery pack. Includes: Instrument charger