Characterization of the volume size distribution of respirable coal-mine dust samples by coulter counter

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      <subfield code="a">Characterization of the volume size distribution of respirable coal-mine dust samples by coulter counter</subfield>
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      <subfield code="a">The use of a Coulter counter model TA is described for measuring the volume distributions of coal-mine dusts collected by the MRE gravimetric sampler. Trisodium orthophosphate as an electrolyte has been found to give good dispersion of the dust, and a 50 nm diameter orifice gives a satisfactory size coverage for MRE dust samples. The instrument is best calibrated using suspensions with known volume concentrations</subfield>
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      <subfield code="g">nº 3, December 1977 ; p. 257-270</subfield>
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