| Light Source(s) |
Deuterium lamp, typical lifetime of >2000 hours, easily changed, prealigned |
| Optical design |
Prism monochromator (patented) with dual beam silicon photodiodes: wavelength selection from 190 to 940 nm, one wavelength at a selection is output to the serial interface and the high resolution analog output |
| Wavelength selection |
190 nm to 940 nm in increments of 1 nm; user selected from front panel via push button input or selected from computer via RS-232 input/output |
| Wavelength accuracy |
better than +/- 2 nm range |
| Wavelength precision |
better than +/- 0.2 nm |
| Wavelength band-pass |
<8.0 nm (typical) at half-height at 250 nm |
| Noise and Drift |
< +/- 1 X 10 -5 AU (over 30 sec period peak to peak, 1.0 sec rise time); < +/- 1 X 10-4 AU (over 30 min. period peak to peak, 1.0 sec rise time) with STD sample cell at constant temperature |
| Input/Output connections |
RS-232 computer I/O; auto-injection input (event or run); auto-zero input; one analog integrator or chart recorder output, (voltage range default 1.0 V/AU); selectable analog range outputs of 4.0, 2.0, 1.0, 0.5, 0.2, 0.1, 0.05, 0.01, 0.005, 0.002, 0.001, 0.0005 AU/V with voltage range of +/- 4 V at any scale |
| Displays |
Absorbance (5 digit LED); wavelength (3 digits LED); analog output range (momentarily from absorbance display by pressing range switch); reference light level; sample light levelSize: 6.6" (height) X 9.4" (width) X 15" (depth with sample cell cover); Approx. 7.3 kg (16 lb. shipping weight) |
| Sample cells |
On column capillary cell. Other optional cells: HPLC flow cell with 10 mm pathlength, total dead volume of 18.0 uL (illuminated volume); micro cell (1.0 µl); 5 mm path length HPLC cell (10 µl volume); high volume preparative cell; high pressure/high volume preparative; cuvette holder. Please note all cells are can be changed by the user. Other cells are available; not all are listed. |
