0 - 14 pH test paper: each pH strip is made of good quality litmus paper, can get fast, accurate and reliable results in seconds Full pH range: it can test from 0 to 14 , pH 0-14 color chart for you to quickly compare test results with the 4 color pH panels on the carton, to get the pH of your solutions Easy to apply: for testing the pH of a solution, just dip the pH strip in solution and the strip will change color immediately Wide applications: also can be applied for laboratory, drinking water, swimming pools, fish tank, hydroponics, aquariums , food, etc Lightweight design: each test paper strip size is 3.15 x 0.24 inch/ 8 x 0.6 , they are packed in a portable box, convenient for using and storing. transportation; Package includes 2 boxes, 100 pieces for each box