Features * Plane holographic grating as dispersive element * Optical system: auto-collimating optical system * T,A,C digital direct display * With the function of timely printing, data storage, protection from power off etc. * 8 curve equation storage available at any time * Auto zero and full scale adjustment and auto eliminating error from cuvette coupling Main specifications *Wavelength range: 200nm-800nm *Wavelength accuracy: ?nm *Spectral band: 6nm *Stray lights: <=0.6% (220nm) *Stability: a light currency 0.5%(T)/3min b dark currency 0.2%(T)/3min *Transmittance range: 0.0%-110.0%(T) *Absorbance range: 0-3.000(A) *Concentration display range: 0.000-9999(C) *T-A conversion accuracy: ?.002(A) *Power: 220V?2V 50Hz?Hz