2x Aquacheck Yellow Swimming Pool Spa Chlorine 4 in 1 Test Strips 50pk 511244A-2

2 Pack of 50ct AquaChek Yellow Strip Bottles 

Just dip an AquaChek Yellow strip in your pool or spa water for one second, and remove it immediately. You get test results in seconds! To keep your pool at its best, test at each end at least twice a week and test your spa before each use. It's also a good idea to write down your results each time you test so that you can track changes. Comes with complete instructions in 15 languages: English, French, Spanish, Italian, Czech, Danish, Dutch, German, Greek, Hungarian, Polish, Portuguese, Russian, Swedish, and Turkish.