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        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "A particle counter is an instrument that detects and counts particles. By its very nature a particle counter is a single particle counter, meaning it detects and counts particles one at a time.  The nature of particle counting is based upon either light scattering, light obscuration, or direct imaging.  A high intensity light source is used to illuminate the particle as it passes through the detection chamber." ] ,
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        "http://dbpedia.org/ontology/thumbnail" : [ "http://en.wikipedia.org/wiki/Special:FilePath/Particlecounter.jpg?width=300"] } } }
