1. A system for analyzing particles in a fluid, the system comprising: a flow chamber for receiving a sample of fluid to be analyzed; one or more detectors positioned to detect two different ranges of fluorescence produced by particles in the fluid in said flow chamber, said detectors generating a trigger signal whenever fluorescence is detected; a classifier training set containing organism type and feature values, wherein the classifier training set comprises a matrix having at least one row of each image of a library of images with particle type and at least another row of feature values for particles; and a support vector machine classifier training set including related particle images, wherein feature values of captured images are calculated and the support vector machine classifier training set is applied to captured images to classify the particle associated with each image.