C/o 12 slits w from 25.0 micrometers to 2000.0 micrometers; 8 gratings w/wavelg from about 200.0 nanometers to about 40.0 micrometers; focal lg 250.0 to 350.0 nm; aperature f4.8 or greater; reciprocal inverse dispersion 3.0 nm/mm w/ a 1200.0 grating; 10 scanning speed stepper motor wavelg drive system; light source-tungsten iodide lamp and power supply and mercury lamp and power supply
