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; control systems for the aforesaid goods, namely, computers, downloadable computer software and recorded computer software for the control and monitoring of yeast monitors, biomass monitors, and biomass sensors; electric control panels for the aforesaid goods; structural parts and fittings for the aforesaid goods sold as a unit therewith