Comment by fuzzfactor

The transparent disposable food-service gloves are usually polyethylene so I wouldn't think they would have the exact same false-positive result as the nitrile gloves. Microscopic particles of stearates are what's on these nitrile gloves, not actual polymer dust or excess abrasive losses.

Maybe a different false-positive particle type in significant amounts is on the polyethylene ones ?

Pure stearates in micro amounts would be expected to be related to mild food-grade soaps, which do end up dissolving in water or oil and do not remain solid like a relatively immobile polymer particle would do.