. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. BAUSCH & LOMB "SPECTRONIC 20" SPECTROPHO TO METER COLORIMETER DIFFRACTION GRATING TYPE. Range 375 mmu In the violet to 95O mmu In infrared. Band width 2O mmu. Direct reading in transmis- sion or optical density. Plug-in printed elec- tronic circuit. 9084-K. "SPECTRONIC 20", Bauseh & Lomb. A wide range, compact, versatile, direct reading in- strument, with high degree of accuracy, simple to operate, and af remarkably low price. Effective band width 20 mmu. Provides monochromatic light in range from
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. BAUSCH & LOMB "SPECTRONIC 20" SPECTROPHO TO METER COLORIMETER DIFFRACTION GRATING TYPE. Range 375 mmu In the violet to 95O mmu In infrared. Band width 2O mmu. Direct reading in transmis- sion or optical density. Plug-in printed elec- tronic circuit. 9084-K. "SPECTRONIC 20", Bauseh & Lomb. A wide range, compact, versatile, direct reading in- strument, with high degree of accuracy, simple to operate, and af remarkably low price. Effective band width 20 mmu. Provides monochromatic light in range from 375 mmu in the violet to 950 mmu in infrared. Wavelength dial graduated at intervals of 5 mmu. Consisting of diffraction grating monochromator with prefocused light source and fixed slits; photo- tubes; electronic amplification system and built-in transformer for operation; and meter for direct indication of transmission and optical density. Three controls adjust the wavelength setting, light Intensity and zero, respectively. Results are repro- ducible within 9084-E. Spectrophotometer - Colorimeter, ;L. "Spec- tronic 2O", complete outfit for rapid spectral scanning and plotting of absorption curves; consisting of 9084-K with blue and red-sensitive phototubes and filter, 9085-M Voltage Stabilizing Transformer and 9085-C Thomas Roto-Cell with double cell with 10 mm light paths. . 9084-K. Spectrophotometer - Colorimeter, ;l. "Spec- tronic 2O", as above described, with blue and red-sensitive phototubes and filter, for routine colorimetric determinations at a single wavelength; with single place sample holder and three Vi-inch test tubes. For 115 volts, 60 eye., 9085-M. Special External Voltage Stabilizing Transformer, recommended for use with above to insure stable operation. . THOMAS ROTO-CELL A liquid-cooled double OUT cell carrier, for rapid spectropho to metric scanning at controlled temperatures. Readily inte
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
