Downloadable computer software for operation of pH, electrochemical, potentiometric, amperometric, dissolved oxygen temperature and optical dissolved oxygen sensors; Downloadable computer software for operation of sensors for measuring pH and dissolved oxygen of water and waste water and measuring pH and dissolved oxygen in processed media and for measuring the internal chemistry of aqueous solutions; Downloadable computer software for operating, monitoring, processing, calibrating, diagnosing, measuring, reading, tracking and managing sensors and electronic devices used with sensors, namely, sensors for measuring pH and dissolved oxygen of water and waste water, measuring pH and dissolved oxygen in processed media and for measuring the internal chemistry of aqueous solutions and electronic devices used to access and read all data from the foregoing sensors; Downloadable computer software for use with sensors that are used with bioreactors for laboratory purposes, fermentation vessels and waste water processing, namely, software for operating sensors for measuring pH and dissolved oxygen of water and waste water, measuring pH and dissolved oxygen in processed media and for measuring the internal chemistry of aqueous solutions; Downloadable computer software for operating, monitoring, processing, calibrating, diagnosing, measuring, reading, tracking and managing electronic devices and sensors, namely, electronic devices in the nature of electronic cards, chip card readers and sensors, electronic device signal conditioning devices, communication devices, industrial process control devices, signal conditioners, bioreactors, fermentation vessels, and computer peripheral devices and sensors for use with electronic cards, chip card readers, electronic device signal conditioning devices, communication devices, industrial process control devices, signal conditioners, bioreactors, fermentation vessels, and computer peripheral devices and sensors for measuring pH and dissolved oxygen of water and waste water and measuring pH and dissolved oxygen in processed media and for measuring the internal chemistry of aqueous solutions; none of the foregoing for medical use