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1889 Science 13 Sept. 174/1 Water so treated will remain clear and odorless for a long time if protected from recontamination by insects, falling leaves, etc.

1936 W. L. Davies Chem. of Milk xix. 435 The bacterial count of roller-dried milk powder is very low, but re-contamination occurs before packing.

2006 Chattanooga (Tennessee) Times Free Press (Nexis) 4 Nov. g7 Using a damp cloth, wipe down the area to capture all dust and potential fibers. Rinse the cloth and change the water often to prevent recontamination of surfaces.