Jekyll speculated that the one essential ingredient that made the original potion work must have been a trace contaminant that was absent from the ingredients he had subsequently purchased.

I believe a trace contaminant was slowly introduced into the EPS power grid through the plasma itself.

Depending on the product and its intended use, polishing may also include operations to sterilize the product and remove or deactivate trace contaminants which might compromise product safety.

There is also the possibility of trace contaminants in the feed which will cause diseases and fish mortality.

In some cases, manufacturing changes may need to be made such as trace contaminants being introduced during some phase of manufacturing.

"Not unless there was some trace contaminant in the cave runoff that inhibited freezing and allowed the crystals to absorb far more than the usual amount of energy."

If the physical size of the trace contaminant is on the order of the pixel size imaged on the sample, its spectral signature will likely be detectable.

Analysis of lower concentrations at the same time is more prone to disruption by trace contaminants in labware and reagents used.

In environmental problems with trace contaminants, such as groundwater contamination, there is often the need for rapid, portable, cost-effective measurement systems for these trace contaminants.

Commercially pure materials of the 1920s containing varying proportions of trace contaminants produced differing experimental results.