9 Scientific apparatuses for preparing, synthesizing, purifying, and analyzing chemical or biological samples in the medical, pharmaceutical and scientific fields, namely, microfluidic devices for use with chromatographs; analyte detectors, sample preparation systems composed primarily of laboratory filters, mixers, meters, serial dilution devices, storage vessels, and incubators; purifiers in the nature of laboratory filters, separators, and chromatographic separation columns; laboratory vessels, namely reaction vessels for performing chemical and biochemical reactions; and fluid pumping and handling systems comprised primarily of controlled volume pumps, valves, conduits, mixers, splitters, incubators, analysis vessels and storage vessels