Because this layer should permit passage of fluid, impermeable dressings are not recommended.
However, the inside lining of the heart is smooth and impermeable to the oxygen tied to the red cells.
The gasket has a core that is impermeable to liquids, with a first side and a second side opposite the first side.
Lacquer, the sap of a tree, has to be applied in thin layers over a long period to build up a surface that is impermeable to liquids.
This will render the topo impermeable , yet still allow you to write notes on it with a ballpoint pen.
But even watertight concrete is not impermeable to the passage of moisture.
The plastic is hydrophobic and thus impermeable to ions and water.
The authors conclude that applying a mattress cover that is impermeable to house-dust mite allergen on the beds of children and their parents reduces night cough in the second year of life.
Condoms are essentially impermeable to particles the size of STD pathogens including the smallest sexually transmitted virus.
The resulting concrete is said to be impermeable to the migration of water or waterborne chemicals.