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Instrument Database:
GBC Scientific Equipment Ltd. - 950 Series ICP-OES Spectrometer
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| Year of introduction |
1991 |
| Status |
historical ( out of service ) |
| Company |
GBC Scientific Equipment Ltd.
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| Categories |
Spectrometer ( Atom. ): AES: ICP-AES
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The GBC 950 series instruments are fully computer controlled, from plasma ignition to results printout. Operating parameters are monitored on the computer screen, and controlled from the keyboard. High standards of analytical performance for both aqueous and organic samples are maintained by a new high-precision concentric nebulizer. A fully demountable, self-aligning torch which features drop-in replacement glassware simplifies maintenance and minimises downtime.
The choice of optical systems includes either simultaneous (polychromator), sequential (monochromator) or both modes of operation. The wavelength range extends from 160 to 820 nm and all systems are fully thermostatted for temperature stability.
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| Specifications |
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Dimensions (w x d x h in cm)
| 175 x 60 x 69,5 | Weight (kg)
| 230 | Power
| | Spectrometer
| polychromator: 1-m modified Paschen-Runge mount, monochromator: 0.75-m modified Czerny-Turner mount; both fully thermostated
1-m monochromator, Czerny-Turner mount, thermostated to better than +- 0.2 °C;
| | Grating | polychromator: 1440 lines/mm; blazed at 587 nm monochromator: 1800 lines/mm, blazed at 400 nm
| Optics
| Entrance optics are fully achromatic, using a toric mirror for high light throughput. Entrance slit may be scanned ± 2.5 nm around the reference position.
| | Wavelength range | 160 - 820 nm
| Wavelength drive
| | | Resolution | 18/9 pm for first/second order
| | Detector | polychromator: up to 60 channels monochromator: 2 selected PMTs, optimized for wavelength range, automatically selected under microprocessor control.
| Detection mode
| | | Read out | |
| | ICP generator
| crystal-controlled, power stabilized to better than 0.3% for 10% mains variation; solid state driver with vacuum tube output stage; Fully computerized auto-ignition
| | Frequency (MHz) | 27.12 or 40.68
| Power (Watt)
| 2000
| Load coil
| | Torch
| Fully demountable, enables easy maintenance and selective drop-in replacement of the glassware
| Argon flow (L/min)
| 11
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| | | Sample introduction | concentric nebulizer, with cyclonic spray chamber
| Operating system and software
| MS-DOS; Application software for ICP and Are/Spark source instruments. Includes comprehensive facilities for spectrometer control, data acquisition, manipulation and reporting. Menu-driven for ease of operation, with context-sensitive help screens to assist the operator. A spectral line library is included, with Background Equivalent Concentration and interference conditions for the most common lines. Provision for diagnostics, method development and step-by-step or fully automated instrument operation (using optionall autosampler). Includes a simulation mode to facilitate training or familiarization.
| Computer
| GBC Data Station, IBM PS/2 or AT-compatible, allows access to third party software. System configuration inciudes 1 Mb RAM , 1.2 Mb floppy disk drive, 40 Mb hard disk drive, two serial ports, one parallel port, VGA colour monitor
| Short term precision (RSD for 10 replicates)
| | Long term precision (RSD for 4 hours)
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| Sensitivity
| | | Detection limits (3s, µg/L) | | Accessories
| autosampler, hydride generator and HF-resistant nebulizer. | Special features
| 951: monochromator only 952: two monochromators 953: polychromator 954: polychromator and monochromator 956: polychromator with additional arc/spark 957: polychromator and monochromator with additional arc/spark source
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