The present invention relates to a method for the assessment of quantity and
quality parameters of biological particles in a liquid analyte material. The method
comprises applying a volume of a liquid sample to an exposing domain from which
exposing domain electromagnetic signals from the sample in the domain can pass
to the exterior, and exposing, onto an array of active detection elements such
as CCD-elements, a spatial representation of electromagnetic signals having passed
from the domain, the representation being detectable as an intensity by individual
active detection elements, under conditions permitting processing of the intensities
detected by the array of detection elements during the exposure in such a manner
that representations of electromagnetic signals from the biological particles are
identified as distinct from representations of electromagnetic signals from background
signals. The size of the volume of the liquid sample is sufficiently large to permit
the assessment of the quantity and quality parameters to fulfill a predetermined
requirement to the statistical quality of the assessment based on substantially
one exposure.
