The school offers training in about 20-30 different concentrations.

Makers offer different concentrations, from about 4 to 7 percent, so follow the dosage on the label.

They can even have different concentrations of trace elements.

Fever medicines come in different concentrations, so always check the instructions on the package.

In these cases, measuring the rotation at several different concentrations allows one to determine the true value.

The addition of nickel, at different concentrations, produces blue, violet, or black glass.

The freshman program offers 16 different concentrations, including business, nursing, and education.

Products reportedly have the same brand name but are available in different concentrations or strengths.

The same is true for ocean water, but the contaminants are found in different concentrations.