Optical system Optical double beam system
Monochromator system Czerny-Turner monochromator
Grating 1200 lines / mm high-quality holographic grating
Wavelength range 190nm~1100nm 
Spectral bandwidth 2nm
Wavelength accuracy ±0.3nm
Wavelength reproducibility ≤0.1nm 
Photometric accuracy ±0.002Abs(0~0.5Abs)、±0.004Abs(0.5~1.0Abs)、 ±0.3%T(0~100%T)
Photometric reproducibility ≤0.001Abs(0~0.5Abs)、≤0.002Abs(0.5~1.0Abs)、 ≤0.1%T(0~100%T) 
Stray light ≤0.03%(220nm,NaI;360nm,NaNO2) 
Noise ≤0.1%T(100%T) ， ≤ 0.05%T(0%T) ，≤±
0.0005A/h（500nm,0Abs,2nm bandwidth）
Baseline flatness ±0.0008A
Baseline noise ±0.1%T
Baseline stability ≤0.0005Abs/h 
Modes T/A/Energy
Data range -0.00~200.0(%T) -4.0~4.0(A) 
Scan speed High / medium / low / very low 
WL scan interval 0.05/0.1/0.2/0.5/1/2 nm
Light source Japan Hamamatsu long-life deuterium lamp, 
imported long-life halogen tungsten lamp
Detector Photocell
Display 7-inch large-screen color touch LCD screen
Interface USB-A/USB-B
Power AC90V~250V, 50H/ 60Hz
Dimension 600×470×220mm 
Weight 18Kg"