That depends on the pH.
color
color
The color of Ph paper is supposed to change, depending on the Ph level of the liquid you placed it on. The color is dependent as well. When purchasing Ph paper, it comes with a guide on the box. It is best to use that.
how does water attect the color of thepH paper
Mauve on the pH paper Merck art. 9565.
Universal indicator or litmus paper are the most common methods. You can get pH paper...the color of the paper correlates to certain pH's. pH paper is more accurate than litmus paper.
blue
it can turn red pH paper blue and blue pH paper red
The pH test paper is used to detrmine the pH; immerse a piece of paper in the solution and compare with the color scale.
The pH paper (Merck art. 9565) become brown.
all you need is some pH tape/paper. it should come with a color wheel, you dip the pH paper in the water and match the color and it should tell you the number
Depending on the type of soil, the value of pH and the type of pH paper. For an acid soil the pH paper from Merck (art. 9565) this color will be probable green.