I saw it once, and i forgot what the name of it was.
2007-02-08 00:54:16 · 4 answers · asked by Miss LaStrange 5 in Science & Mathematics ➔ Chemistry
If it is the machine you are looking for, this is called pHmeter. It normally consists of a probe for the pH and another for the temperature and works by immersion into the solution you want to measure.
Easier ways of measure the pH of solutions include the addition of a pH indicator into the solution under study (whose color varies depending on the pH of the solution) or using a special paper which aslo changes color according to the acidity of the solution.
If you want to know more abouot pH-meters, look here:
http://en.wikipedia.org/wiki/PH_meter
2007-02-08 01:18:11 · answer #1 · answered by Jesus is my Savior 7 · 0⤊ 0⤋
Are you talking about Litmus paper?
Other common PH indicators are phenolphthalein, methyl orange, phenol red, bromothymol blue, and bromocresol purple.
2007-02-08 01:00:50 · answer #2 · answered by John L 2 · 1⤊ 0⤋
by a calibrated pH meter or universal indicator
2007-02-08 01:16:01 · answer #3 · answered by Ronald_HK 2 · 0⤊ 0⤋
or even better yet, how about a pH meter?
2007-02-08 01:07:48 · answer #4 · answered by medellia1984 3 · 1⤊ 0⤋