9 Cell culture apparatus for laboratory use, namely, cell culture monitors; cell culture apparatus for laboratory use, namely, viable cell monitors; scientific apparatus, namely, biomass monitors and biomass sensors for the measurement of biomass, and laboratory biomass analysers; scientific measurement apparatus, namely, yeast monitors, probes for yeast monitors, and laboratory yeast analysers; research laboratory yeast analysers; scientific yeast pitching apparatus, namely, yeast monitors for the control of control switches; scientific yeast cropping apparatus, namely, yeast monitors for the control of introductions of liquids bearing yeast into settling and storage vessels; viable yeast measurement apparatus, namely, cell culture monitors, viable cell monitors, biomass monitors and biomass sensors for measurement of biomass; sensors; sensor apparatus, namely, biomass sensors optical sensors; electronic measurement sensors for cell culture monitors, viable cell monitors, biomass monitors and biomass sensors for measurement of biomass; optical measurement sensors; optical measurement apparatus, namely, cell culture monitors, viable cell monitors, biomass monitors and biomass sensors for measurement of biomass; control systems for the aforesaid goods, namely, computers and downloadable computer software for the control and monitoring of yeast monitors, biomass monitors, and biomass sensors; structural parts and fittings for the aforementioned goods sold as a unit therewith; control systems for the aforesaid goods, namely, computer hardware and downloadable computer software for the control and monitoring of yeast monitors, biomass monitors, and biomass sensors; and electric control panels for the aforementioned goods; computer hardware; all the aforementioned for use in bioprocessing industries; all the aforementioned for monitoring, measuring and/or analyzing biomass