At this moment there are no hydraulic piping stand- ards available which cover different pressure classes and piping materials as well as being gener- ally suited for all applications.
A high concentration simply means there is a high percentage of solute particles dissolved in the solvent and the solution is said to be concentrated. And a low concentration means there is not a high percentage of solute particles in the solvent and the solution is said to be diluted. high concentration of something, like a hormone in the blood, means there is a lot of it. A low concentration of something means there is not a lot of it, but a little.
concentration conÂ·cenÂ·traÂ·tion (kÅn'sÉn-trÄ'shÉn) n. An increase of the strength of a pharmaceutical preparation by the extraction, precipitation, and drying of its crude active agent. An increase in the strength of a fluid or gas in a mixture by purification, evaporation, or diffusion.