| Item | Specification |
| Wavelength Range | 190-600 nm in 1 nm increments. No lamp change required |
| Wavelength Accuracy | + 2 nm |
| Wavelength Repeatability | +0.05 nm |
| Spectral Bandwidth | 4 nm |
| Noise | 5 x 10-5 AU (peak-to-peak dry cell) at 230 nm and a1 second time constant |
| Drift | 2.5x 10-4 AU/hr with ambient temperature change 1°C.hr |
| Attenuation Range | 0.001 to 2.0 UFS |
| Linear Dynamic Range | 8.7 x 103 at 214 nm; 1.2x 104 at 254 nm (ASTM E685) |
| Time Constants | 0.1 to 99 sec |
| Scan Rate | Up to 10 increments/sec; increments variable from 1 to 50 nm |
| Wavelength Switching Time | 0.1 sec |
| Wavelength programming | 8 wavelength changes/channel |
| Attenuation Programming | 8 changes/channel |
| Event Outputs | 8 |
| Event Programming | On, off, pulse, repetitive pulse |
| Event inputs | 4 |
| External power supply | 12 V at 0.5 A |
| Auto zero | Activated by wavelength change, event input, time program or front panel |
| Analog Outputs | 4 independent channels |
| Refractive Index correction | TAPER-CELL Design |
| Brandspreading | 10µL |
| Path length | 10 mm |
| Materials | 316ss, Teflon, Suprasil |
| Cell pressure limit | 1000 psig |
| Light source | Xenon stobe lamp |
This refurbished Waters 490 Programmable Multiwavelength Detector is really in great condition and is tested at SpectraLab Scientific.
A 90 day warranty is included. Multiple available.
