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US 4,305,722 AGranted
Wetting cycle for spun blood smears
AssigneeCoulter Electronics, Inc.
InventorHans J. Kunz
Life of this patent
Estimating the term…
Abstract
Disclosed is a method of preparing a blood smear on a microscope slide wherein a diluent is applied to the slide, the slide is spun so as to be coated with a thin layer of diluent, a blood sample then is dispensed on the slide, and the slide is spun a second time to spread the blood sample over the slide.
Claims7
A method of preparing a blood smear on a microscope substrate, said method comprising:
- dispensing a coating liquid on the substrate;
- thereafter, spinning the substrate about an axis substantially perpendicular to the plane of the substrate so that the coating liquid spreads into a relatively thin layer over at least a portion of the substrate;
- thereafter, dispensing a quantity of blood onto the liquid coated substrate;
- thereafter, spinning the substrate for a second time so that the blood spreads over at least a portion of the liquid coated substrate.
1 more element
A method of preconditioning a substrate for a blood smear, said method comprising the steps of:
- applying a blood cell free liquid to the substrate, and then
- spinning the substrate about the axis substantially perpendicular to the plane of the substrate to cause the liquid to spread into a relatively thin layer over at least a portion of the substrate.
Dependencies are inferred from the claim text.