pH comes from Latin. It meas "pondus hydrogenii"
hydrogen weight. Another possible
meaning is potentia hydrogenii
= hydrogen effectivity.
value of pH is very important
regarding industry, medicine,
food sector and agriculture.
Although the pH is mostly measured
in aqueous solutions it can be also
defined in solids (fruits) and in
the human body (the value of
pH in the human skin). In order to
get appropriate results, it is
important to perform the measurement
in an object with a proper moisture
content. The pH is determined by
means of pH indicators or with
digital measuring instruments
pH indicators are substances that
change color around a particular pH
With both testing strings and paper indicators
less precise results have been
the digital pH meters you can get a
quick and proper results.