Testing Solution for pH
Testing solution for pH. Universal indicator changes its color depending on the pH of the solution. Shown here is a universal indicator paper strip testing Windex for pH. The strip color (blue) indicates that Windex is a base.
Credit
Science Source
/ Photo Researchers
Dimensions
3232 x 4994 pixels
Print Size @ 300 dpi
11 x 17 inches / 27 x 42 cm