9 Measuring instruments for measuring and monitoring oxygen and carbon dioxide consumption and production in living species, namely, animals, plants, bacteria, algae; measuring instruments for measuring and monitoring oxidation in elements and chemicals; Measuring instruments for measuring and monitoring oxygen and carbon dioxide consumption and production, activity, feeding, drinking, body mass, running wheel activity, sleep, urine output, caloric expenditure, temperature, heart rate and living environment conditions in living laboratory animals, namely, oxygen regulators, carbon dioxide sensors, scales, counters, leak monitors, infrared and proximity movement detectors, oxygen sensors, strain gauges, respiration monitors for laboratory use, thermometers, and radio telemeters