A client seeks a device capable of detecting contamination in a liquid flow. The system needs to detect non-liquid particles, bacteria, yeasts, mold, and/or spores in a continuous liquid stream. Any proposed sensing methodology must not physically interact with the liquid flowing in the interior of the channel. In operation, the detection system should report any contamination; the nature of the contamination can be determined later. A proposed solution need not identify the specific contaminant. An optical or light-based system is desired, but a variety of technologies may be acceptable if they do not require the fluid flow to be sampled directly.

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This article first appeared in the June, 2014 issue of NASA Tech Briefs Magazine.

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