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| Brand | Solar Light |
|---|---|
| Origin | USA |
| Model | SPF-290AS |
| Wavelength Range | 290–400 nm |
| Spectral Bandwidth (FWHM) | 1.66 nm |
| Wavelength Accuracy | ±0.2% (±0.58–0.80 nm) |
| Wavelength Repeatability | ±0.25 nm |
| Absorbance Range | 0–3.2 A (Dual-Doped PMMA Method) |
| SPF Measurement Range | 1–50+ |
| Scan Time | <25 s |
| Wavelength Step Intervals | 1, 2, or 5 nm (user-selectable) |
| Light Source | Continuous-output Xenon Arc Lamp |
| Detector | High-Sensitivity Photomultiplier Tube (PMT) |
| Sample Positioning | Motorized X-Y Stage |
| Power Supply | 110 V AC / 60 Hz or 220 V AC / 50 Hz |
| Warranty | 1 year (instrument), 500 h (lamp |
| typical lamp life | ~1000 h) |
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