Electrical sizing and counting of platelets in whole blood |
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Authors: | J. Schulz R. Thom |
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Affiliation: | (1) Walseg 2, D-7900 Ulm (Donau), W. Germany;(2) Schwendener Str. 25 A, D-1000 Berlin 33, W. Germany |
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Abstract: | Hydrodynamic focusing with a jet close to the orifice of a Coulter counter is used as a detector for particle sizing, with a substantial increase in resolution and size range. To maintain these improvements during analogue-digital conversion, zero crossover triggering for sample and hold and a pulse-shape dependent inhibition before address transfer to the memory of a multichannel pulse-height analyser have been performed. Results are given showing size distributions of polystyrene latex particles, fixed red cells and living red cells with platelets from whole blood. |
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Keywords: | Coulter counter hydrodynamic focusing increased resolution and range pulse-height analysis platelets in whole blood |
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