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Instrument Database:
Hitachi - Science & Technology - LaChrom ULTRA L-2400U UV Detector/L-2420U UV-VIS Detector
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| Year of introduction |
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| Status |
available |
| Company |
Hitachi - Science & Technology
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| Categories |
Chromatography: GC
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The LaChrome ULTRA L-2400U UV and L-2420U UV-Vis Detectors
For fastest detection and extreme sensitivity With their extremely low detector response times of 10 ms thses detectors are able to register even the narrowest of rapidly eluting peaks with a high degree of precision. Both detectors are designed on the double-beam photometer principle in conjunction with a rating monochromator and both provide the highest possible sensitivity even at the fastest detector response times. With the bhelp of the different spectral emission lines generated by the deuterium and mercury sources, wavelength calibration can be carried out over the entire wavelength range. In contrast to calibration filters (e.g. holmium oxide) that also have to be calibrated themselves, the emission lines of the lamps represents a primary reference standard so that they need not be recalibrated. For ease of maintenance, all lamps and the flow-through cell are accessible from the front of the instrument. - Highest possible sensitivity
- Very low drift
- Uniquely short response times
- Extremely high data collection rate
- Minimal internal volumes
- Mercury lamp for wavelength calibration
- Lamps and cells accessible fromn the front
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| Specifications |
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| | L-2400U UV Detector
| L-2420U UV-Vis Detector
| Source
| D2-lamp, Hg lamp for wavelength calibration
| D2+W lamp, Hg lamp for wavelength calibration
| Wavelength range
| 190-600 nm
| 190-900 nm
| Noise
| <0.3 x 10-5 AU at 250 nm
| <0.3 x 10-5 AU at 250 nm and 600 nm
| Drift
| <0.5 x 10-4 AU/h at 250 nm
| <0.5 x 10-4 AU/h at 250 nm and 600 nm
| Slit width
| 6 nm
| 6 nm
| Response time constants
| 0.01/0.02/0.05/0.1/0.5/1/2 s
| 0.01/0.02/0.05/0.1/0.5/1/2 s
| Data collection rates
| Shortest data interval 10 ms or 100 Hz
| Shortest data interval 10 ms or 100 Hz
| Flow-through cell
| 5 mm, 3.2 µL
| 5 mm, 3.2 µL | FDA/GXP functions
| - Automatic wavelength calibration with various D2- and Hg spectral lines
- Maintenance logbook: date of last lamp replacement (D2, W and Hg lamp), lamp energy, lamp usage time, number of ignitions
| - Automatic wavelength calibration with various D2- and Hg spectral lines
- Maintenance logbook: date of last lamp replacement (D2, W and Hg lamp), lamp energy, lamp usage time, number of ignitions
| Safety
| leak sensor, error handling
| leak sensor, error handling
| Power requirements
| 24 V DC, 85 W, either from the Organizer Unit or an optional power supply
| 24 V DC, 85 W, either from the Organizer Unit or an optional power supply | Dimensions
| 340 (W) x 400 (D) x 150 (H) mm
| 340 (W) x 400 (D) x 150 (H) mm
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