Coleman Model 111 Spectrophotometer • 200-900 millimicron range m 2 millimicron bandpass • fingertip lamp changeover • dual range phototube
SPECTROPHOTOMETER, UV-Visible, PerkinElmer, Coleman Model 111. Single-beam, diffrac tion g r a t i n g type, a.c. line operated, with fixed bandpass of 2 m M , usable in ultraviolet r a n g e down to 200 m M . Provides adequate resolution for routine analytical, clinical, a n d control applica tions. Phototube is dual r a n g e type covering total r a n g e from 200 t o 900 m^,. Changeover from deuterium to t u n g s t e n lamp is made by fingertip lever operation. E n e r g y recording a t fixed wave length is made possible by output a t r e a r panel terminals. Linear Wavelength Control. Graduated in 0.5 m u divi sions. Meter Scale. Length h1^ inches. Graduated 0 to 110% transmittance and —0.04 to 2.0 absorbance. Monochromator. Grating has 1440 lines per mm and is blazed a t 200 m u for high UV efficiency. Sample Compartment. Absorption cell holder takes four 10 mm light path cells with outside dimensions 12.5 χ 12.5 χ 48 mm high. Holder also takes cells with 5 mm light path or, by removing central partition, 20 mm light path cells. Compartment length allows use of cells with up to 100 mm light path. Recorder-Readout Provision. Rear panel terminals provide full-scale signal of 10 millivolts for a potentiometric recorder, and 1 volt for a digital voltmeter.
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Performance Specifications Wavelength range 200 to 900 m,,.
Bandpass 2 m u throughout. Photometric linearity ± 0 . 5 % T ; ±0.005 A at 0.4 A. Photometric reproducibility better than ± 0 . 1 % T. Wavelength accuracy ±0.5 m u throughout. Wavelength reproducibility ±0.1 m u throughout. Cell path 5, 10, 20 mm; 100 mm maximum. Dual Light Source. Deuterium and tungsten lamps are mounted adjustably in ventilated compartment. Dimensions. Photometer, 21 χ 17 V2 χ 8% inches high. Power supplies, 7% x SV* x 11 inches high. 9095-Y20. Model 111 Spectrophotometer, range 200 to 900 m u , as described. Includes deuterium lamp, deu terium lamp power supply, tungsten lamp, tungsten lamp power supply, 4-place cell holder, set of two fused silica 10 mm absorption cells with covers, and set of two glass 10 mm absorption cells with covers. For 115 volts ± 1 0 % , 60 cycles, a . c ; 190 watts 2,200.00 NOTE-Model for 230 volts, 50 cycles available on special order.
Save time and increase accuracy by adapting the Model 111 to semi-automated procedures with Thomas Flow Cell Adapter, Flow-Through Probes, Digital Readout or Printout See pages 980, 983987 of Thomas Catalog 68.
Bulletin B-326 sent upon request
ARTHUR H. THOMAS COMPANY Scientific Apparatus and Reagents VINE STREET AT 3RD · P.O. BOX 7 7 9 • PHILADELPHIA, PA. 19105, U.S.A.
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