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| Optical System |
 |
Fully symmetrical double beam optical system. All mirrors
coated for long life |
| Monochromator |
|
Modified Czerny-Turner design using 1200 L/mm holographic
diffraction grating |
| Detectors |
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Two silicon diode detectors |
| Self Test and Calibration |
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Automatic at switch on |
| Wavelength Range and Accuracy |
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190 - 900nm; 0.5nm |
| Wavelength Reproducibility |
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0.1nm |
| Wavelength Readout |
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Digital display on screen |
| Wavelength Selection |
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By GOTO Key and keypad entry |
| Optical Bandwidth |
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2nm |
| Stray Light |
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Less than 0.02% at 220nm, NaI; and 0.02% at 340nm, NaNO2
|
| Display Screen |
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Large backlit LCD displays spectra, menus, data, operator
prompts and instrument status. |
| Derivative Spectra |
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1st to 4th derivatives - autoranged or operator defined.
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| Autozero |
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Automatic by press button |
| Photometric Readout |
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Digital display of A, %T and C on screen |
| Photometric Accuracy |
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±.004A at 1A |
| Photometric Noise |
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Less than ±0.0001A at 550nm |
| Baseline |
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Stored in safe memory |
| Baseline Flatness |
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±0.001A (300nm/min, 200-900nm) |
| Baseline Stability |
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Better than ±0.0001A/hour |
| Computer Interface |
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Bi-directional RS 232 C |
| Scan Speeds |
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1-4000nm/min |
| Wavelength Scale Expansions |
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1-100nm/cm |
| Method Storage |
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30 methods may be stored and retrieved |
| Method Protection |
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Each protected by 4 digit password |
| Reaction Kinetics |
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With plots, reprocessing of data as required, for single
cell or up to 6 cells |
| Overlaid Scans |
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Derivatives and scans superimposed with or without offset.
Up to 8 scans may be overlaid. |
| Cell Programming |
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Up to 4, 6 or 8 cells |
| Programme Cycles |
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From 1 to 9999 |
| Programme Delay (cycle time) |
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From 0 seconds to 4 days (1 sec resolution) |
| Wavelength Programming |
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Up to 10 wavelengths. May be combined with a cell programme
|
| Storage of Spectra |
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100 spectra may be stored security code protected |
| Concentration Curve Fitting |
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Linear, quadratic or cubic with editing of standards. Up
to 30 curves may be stored and protected |
| Batch Sampling |
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For up to 100 samples under internal control with screen
display |
| Date and Time Information |
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Printed from real time clock |
| Power Requirements |
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110-250V, 50/60Hz, 200 watts. |
| Dimensions |
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635 x 410 x 210mm |
| Weight |
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33kg |
