The probe will respond quickly in samples such as water, and more slowly in viscous samples such as oils, emulsions and creams. Unlike an electrode, the optical sensor will not consume oxygen. This means that stirring the sample will increase the response rate, but will not affect the final equilibrium reading. The glass is immune to common organic solvents. In the event that the coating is damaged or destroyed, the probe can be re-coated at a nominal charge.
Measurement accuracy is affected by compounds that competitively quench the fluorescence.
The probe is warranted for 1 year as a cautious approach to a new product. It is expected that probes in benign environments may last for a very long time. However, it is too soon in the probe's product development to discern with great certainty. Because the ruthenium may be subject to photodegradation, the total exposure to the excitation energy should be minimized. The operating software will turn the LED on and off so that it is illuminating the probe only during a measurement cycle.