1) Set conditions of an ion chromatography as follow;
a. Applied current for detector of 59 mA
b. Injection volume of sample of 25 ul
c. Flow rate of carrier of 1.0 mL/min
2) Inject a series of the diluted mix cation standard solutions
3) Inject a filtered water sample solutions
4) Interpret peak area of standard and sample chromatograms
5) Calculate concentration of cations in the osmotic water samples