pH sensors, redox sensors, dissolved oxygen sensors, and parts and accessories therefor, namely, housing, cables, connectors, adaptors, and soaker bottles filled with solution for storage and transport, electrolyte solution, storage solution and buffer solution, sold as a unit therewith; laboratory equipment, namely, fermentation vessel for use in cell culture and peripherals for controlling variable fermentation parameters for use therewith, namely, peristalitic pumps for reagent addition, heater blankets for vessel temperature control, heat exchanger tubes, reagent addition tubes and ports, air sparging tubes, aeration tubes, air overlay tubes, septum ports, stir shafts and stir shaft couplers, variable speed stir motors to power shafts for media agitation, Impellers, media level detectors, media foam detectors, media pH sensors, media dissolved oxygen partial pressure sensors, mass-flow valves for air, oxygen, nitrogen, and carbon dioxide addition, filters for gas and media addition to the vessel, controllers for variable parameters such as pH, dissolved oxygen, temperature, reagent addition, and gas addition to the vessel, all of the aforementioned goods being laboratory equipment