A versatile time-sharing multichannel spectrophotometer, reflectometer, and fluorometer.

A simple turbine-driven multi-wavelength time-sharing apparatus affords flexibility and versatility in optical measurements and serves as a fluorometer, reflectometer, and spectrophotometer for four wavelength channels. As a reflectance fluorometer, nearly simultaneous readout of tissue reflectance and NADH or flavoprotein fluorescence can be obtained. As a transmission spectrophotometer and reflectometer, hemoproteins such as myoglobin, catalase, and cytochrome a + a3 with its copper component may be measured. This instrument offers the advantages of high speed of time-sharing, and simplicity, compactness, and flexibility not found in previous designs. In addition, it causes minimal acoustic and electrical disturbance to the experimental system.

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