The concentration of hydrogen ions
Litmus paper, or other pH papers can measure pH. Many pH test papers can measure specific pH values. There are also instruments called pH meters that can measure pH.
It is very easy to measure pH using a pH meter.
See the Related Questions links for more information about pH.
You can measure the pH in an aquarium by a pH test kit, or by using an electronic pH monitoring device. There are also other ways to test.
pH paperselectronic pH meter
Litmus paper, or other pH papers can measure pH. Many pH test papers can measure specific pH values. There are also instruments called pH meters that can measure pH.
It is very easy to measure pH using a pH meter.
See the Related Questions links for more information about pH.
pH is a measure of the hydrogen ion (H+) activity in a solution.
We can use a pH paper.
pH is a measure of acidity...
The pH of solutions (liquids) is measured.
You can measure the pH in an aquarium by a pH test kit, or by using an electronic pH monitoring device. There are also other ways to test.
pH paper and pH meter
pH paperselectronic pH meter
The pH is a measure of the acidity/basicity of a solution.
measure the pH of a liquid and possibly a solid