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Improved Resolution and Accuracy in Electrical Sensing Zone particle counters through hydrodynamic focussing
Author(s) -
Merkus Henk G.,
Liu Houyuan,
Scarlett Brain
Publication year - 1990
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19900070103
Subject(s) - particle (ecology) , resolution (logic) , position (finance) , coulter counter , materials science , physics , computer science , geology , finance , oceanography , microbiology and biotechnology , artificial intelligence , economics , biology
The electrical sensing zone technique is long established, well researched and widely used. It is often used as a reference method against which others are compared or calibrated. This position should not be allowed to disguise the potential which exists for still greater accuracy and versatility. In this paper the use of the hydrodynamic focussing technique is evaluated and an experimental comparison is made with a normal Coulter stand for several samples. It is clearly shown that hydrodynamic focussing enables higher resolution and accuracy to be obtained for materials with narrow or unusual particle size distributions.