A simplified fluorometric fluoride analyzer

Abstract A fluorometric fluoride analyzer previously described (Ivie et al ., 1965) has been redesigned and simplified to provide a more usable instrument. A single photomultiplier tube is used to receive alternate light pulses rather than the two tubes used formerly. Illumination of the sensitized tape is accomplished by two ultraviolet lamps. The electronic circuitry for tape illumination and carrying of signals to the recorder has been simplified. A light “piping” system improves light transmission and the bulk and weight of the overall equipment has been reduced to about one-half.