The reason for this is that perchlorates are typically highly soluble materials.

Most optical resists are developed by mixtures of solvents which wash away the more soluble material left after exposure.

To optimize the leaching of soluble material, the lixiviation is done in cascaded stages.

Protozoans commonly take in food and water, and give off wastes, by simple osmosis, the exchange of soluble materials through the body wall.

Oceans have been picking up soluble materials (notably sodium chloride - salt) from the land, for millions of years.

Heavy rainfall results in leaching out all soluble material of top layer of soil.

However, they rapidly convert soluble organic materials in the waste water into methane gas.

The sieved material is then repeatedly washed to remove insect parts and other soluble material.

The phloem is concerned mainly with the transport of soluble organic material made during photosynthesis.

It is well suited for low-viscosity, soluble materials like organic semiconductors.