Dilution of Concentrated Hydrogen Peroxide Solution

If you want a lower concentration of hydrogen peroxide solution than what you have purchased, you may dilute it with demineralised water. Before you start diluting the concentrated hydrogen peroxide solution, you should prepare standard demineralised water and stabilizers (manufacturer specification). These are very important to keep stability of the hydrogen peroxide.

Demineralised water or purified water you will use should have conductivity lower than 1 usmos/cm and SiO2 < 0.1 ppm. Consider also pH of demineralised water. Because hydrogen peroxide solution has lower pH, which depends on the concentration.

The higher the pH of hydrogen peroxide solution, the higher the decomposition rate of hydrogen peroxide. Adding additional demineralised water will make the pH of the hydrogen peroxide solution increases. That’s why we need to add stabilizers into the solution. Please confirm which stabilizers substances you should you to the manufacturer of your hydrogen peroxide.

Finally, do not forget to mix the solution after you add additional demineralised water in order to get the homogenous solution. But once again if you have air for the mixing purposes, please make sure the air is clean.