Review of Scientific Instruments · 1942 · 11 citations · 5 references
EngineeringBioengineeringElectrical EngineeringBiophotonicsBiosensorsSensorsEnvironmental BiosensorsOptical BiosensingOptical BiosensorsComparator DesignComparatorsLight Source TechnologyOptical Turbidity MeasurementTurbidimetric Growth MeasurementTurbidityTurbidity SensingTurbidity Sensors
An a.c. operated photoelectric turbidity comparator which has been found useful in assaying physiologically active substances by measuring the growth of micro-organisms is described. A special feature is that the power supply for both the amplifier and the light source is electronically stabilized.
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