Vacuum quality monitors in the nature of vacuum gauge controllers used in the measurement of vacuums; mass spectrometer and sub-assemblies, optical spectrometers and subassemblies; other spectrometer-based instruments and subassemblies in the nature of scientific research equipment for use in mass spectrometers; atmospheric sampling instruments or components, plasma monitoring and control products, particle measurement instrumentation and general instrumentation and subsystems that are used for gas compositional analysis in the nature of computer hardware, namely, communication units for use in connection with the monitoring, communicating and analyzing data taken from electronic systems involved in controlling and monitoring manufacturing processes integrating controls and gauges; Gas or liquid separation technology-based instruments and subassemblies in the nature of fluid separation apparatus for separation of gas from liquid in a chemical refinery, namely, gas chromatography apparatus