pH value testing

What? I never thought it was acidic/alkaline!

Do you know what kind of acidic/alkaline liquid we often see in our daily life?

This video is going to tell the viewers what the color of the litmus paper should we use to testify acidic and alkaline materials,

different reactions when they touch different liquid, and how to operate correctly.


And now... Let's begin!


More than leading viewers how to testify solution, it also tells the acidic and alkaline liquids in our daily life.