Amazon.com : 6-in-1 Electronic Pool and Spa Water Tester : Garden & Outdoor.
AquaChek TruTest Spa Test Strip Digital Reader. Tester is powered by 2 AA batteries (not included); Water-resistant; Includes digital reader, user guide in 15
Information on the methods of water testing and its importance, in order to achieve optimum spa and hot tub water quality and clarity.
The blue AquaChek TruTest Test Strip Reader Kit brings chlorine hot tubs and pools the ease and accuracy of digital water testing! Dip a test strip into your spa
A digital pooltester will do the hard work for you, and simply give you a numerical. to handle and operate electronic digital pool tester for pool and hot tub water.