neither pH
We can use a pH paper.
Purchase pH testing strips or use a pH meter.
you can use ph when you need it
You can use a pH paper.
To measure pH accurately in a solution, you can use a pH meter or pH strips. A pH meter provides a digital reading of the pH level, while pH strips change color based on the pH level of the solution. Simply dip the pH meter probe or pH strip into the solution and read the pH value indicated.
pH scale
Using a calibrated pH-meter with correction for temperature and slope.
either use pH paper or a pH meter
Using a pH-meter the measurement is more accurate and sure.But at home you can use a pH-paper for transparent liquids.
ph papers ++ More accurately, either pH papers with a colorimeter, or a pH meter that works on the conductivity of the fluid.
ph in pool to low said not to use baking soda what to use
Litmus paper