This tester is really easy to use and allows you to adjust the pool of water. Would I order again. But I was initially a bit confused because the right display two scales with numbers shows: Once for "BR" and once for "Ch". After I informed myself in the Internet and found out that this "Br" is of no interest to me, because I have been working with chlorine tablets, everything was ok. The "Br" is bromine and is also used for the disinfection of swimming pool water suitable, so similar to chlorine. The description could be more extensive. There are of me a point deduction.
