The Master test kit is a great fast way to test your water. Master test kits are so easy to use and very inexpensive to buy. 

There is no need to buy refills, because you just buy a whole new test kit for the same price. No more waiting for tablets to dissolve. You just fill the test tube up with water line and add a few drops. .

The Master Liquid test kit lasts for 6 months on the shelf and is the simplest way to test your water. Inside the kit you will get a Wide Range pH 5.0-9.0. An Ammonia test kit, Nitrite tester, Plus a salt level tester.

Kit contains instruction book, improved color cards for easier reading, 4 test tubes and holding tray