| Model | NU-T1810D | NU-T1810DA | NU-T1810DS |
| Optical System | Double Beam, Grating 1200 line/mm | ||
| Wavelength Range | 190～1100nm | ||
| Spectral Bandwidth | 1.8nm | 1nm | 0.5/1/2/4/5nm |
| Wavelength Accuracy | ±0.3nm | ||
| Wavelength Repeatability | ±0.1nm | ||
| Photometric Accuracy | ±0.3%T；±0.0015Abs（0~0.5Abs）；±0.003（0.5-1.0Abs）； | ||
| Photometric Repeatability | ±0.1%T；±0.001Abs（0~0.5Abs）；±0.002（0.5-1.0Abs）； | ||
| Stray Light | ≤0.03%T, @220nm/360nm | ||
| Noise Level | ±0.0008Abs | ||
| Stability | ±0.0008A/h@500nm | ||
| Baseline Flatness | ±0.0008Abs | ||
| Baseline Dark Noise | 0.05%T | ||
