red cabbage is a good universal indicator
you need a red cabbage
hot water
and a pestle and mortar
put hot water into the mortar and crush the red cabbage leaves with the pestle
the water should turn purple.
your own universal indicator!
The pH is determined with a pH-meter.
A pH meter shows how acidic or basic a substance is
A pH meter determines acidity or alkalinity of a substance.
The lowest pH level that can be measured in a substance is 0.
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.
The pH is determined with a pH-meter.
You need a pH-paper or a pH-meter.
We can use a pH paper.
A pH meter works by measuring the concentration of hydrogen ions in a solution. It uses a glass electrode that generates a voltage proportional to the pH of the solution. This voltage is then converted into a pH reading displayed on the meter.
Using a calibrated pH-meter with correction for temperature and slope.
Using a pH-meter the measurement is more accurate and sure.
Not the pH-meter, but the electrode.