monitoring of the blending of pharmaceutical powders including excipients additives and active pharmaceutical materials blending of other powders including food and chemicals monitoring dispersions and bi phasic mixtures such as insulin emulsions and oil and gas applications including analyzing water content in oil or oil content in water inclusion of a transmissive window provides physical separation between the measuring device and the process or material being tested therefore this window allows for in line measurement and or non invasive measurement of parameters such as chemical functionality including alcohol content of petroleum fractions or trackifier resins environmental applications are also conceivable such as stack gas analysis including measurement of nox sox co co2 or other gases in a gas stream wastewater analysis and treatment monitoring and hazardous substance monitoring applications such as mercury vapor detection as previously noted moc technology in accordance with the present subject matter may be used to monitor a wide variety of materials as the materials are subjected to different processes in an exemplary configuration the mixing of powders can be monitored as materials are blended the existing art does not allow for continuous real time in line measurement current limitations are the result of several factors including moving of the powders being measured during the course of data acquisition and the need to connect analytical equipment.