Digital Aid pH Meter. Professional Quality Water Test Meter by Large Backlit LCD Screen. Range 0.00 to 14.0 pH. 3 Free Buffer Solution Powders. Plus get 6 More - See Below. Get Free pH Buffer Solution Powder included. FREE pH Chart emailed with each order! Professional Quality, Bright Backlit LCD Screen. Unlike Economy models available. If you are looking for a Super Accurate and Reliable Meter, this is the one for You! pH tells you when you need to add Chlorine to your pool... or when your wine or cheese is ready! Last pH Meter you'll have to buy, we're so confident we offer a 100% Money Back Guarantee for Life! Includes three pH Buffer Solution Powders - pH 4.00, 6.86 &amp; 9.18 Included. Bonus pH Chart emailed with each order! Professional Quality, Bright Backlit LCD Screen. Unlike Economy models available. If you are looking for a Super Accurate and Reliable Meter, this is the one for You! pH tells you when you need to add Chlorine to your pool... or when your wine or cheese is ready!