摘要: A photoacoustic device for analysis of fluids. The is made up (A) a source pulsating beam light, preferably the chopper type, and (B) an enclosure, elongated structure having generally cylindrical, e.g. essentially tubular shape; containing holding--in sonic insulation--at least one reference chamber at measuring in linear or serial arrangement common cell within coaxial arrangement; enclosure provide path P light through chamber. For most purposes, it preferred that pass first subsequently into Optionally, second arranged end may follow.
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