pH test kit by Vitalink
This pH test can measure ph values from4 up to 8,5 with 0,5 increments
just pour some of your solution into the tester tube and add some drops from the liquid the kit contains, stir it up a little and wait 2-3 minutes. Then compare the color of the solution with the color chart on the package.
Even it is not as accurate as a ph meter, this test kit is an easy and cheap solution for basic measurements
The kit is enough for up to 100 readings