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Examine This Report On smoke 

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Filter/dilution tunnel. A smoke sample is drawn by way of a tube in which it's diluted with air, the ensuing smoke/air combination is then pulled by way of a filter and weighed. This is actually the internationally recognized approach to measuring smoke from combustion.[66] During the 18th century using https://nmate25702.wikilinksnews.com/5940875/smoking_an_overview
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