Lichens draw their nutrients from the environment and are easily contaminated.

Helium is used as a shielding gas in arc welding processes on materials that are contaminated easily by air.

The bearings are normally open to the elements and easily contaminated, although this rarely causes failure.

Both of these are easily contaminated, they said, and neither collagen nor bioapatite contains information about a person's most recent diet.

Cell lines are easily contaminated, and finicky.

Then there is the question of water: where groundwater is easily contaminated, landfill leakage can be a big problem.

Similarly milk and products are easily contaminated by bacteria and spoiled.

It has very low film strength and it is easily contaminated by water which further reduces its utility and will encourage corrosion of steel parts.

They're working with very expensive raw materials in a medium that's very easily contaminated.

Since they are also contaminated easily, they are only manipulated in laboratory conditions with a laminar flow cabinet.