Chemical and biological analytical equipment, namely, automated sample introduction systems comprised of autosamplers, pumps, valves, and fittings; Chemical and biological analytical equipment, namely, automated sample introduction systems comprised of autosamplers, pumps, valves, and fittings for mass spectrometer systems; Chemical and biological analytical equipment, namely, automated sample dilution systems comprised of autosamplers, pumps, valves, and fittings; Chemical and biological ana...