pH Test Strips 4.5 - 9.0 (200 strips) for Urine & Saliva

Clear and simple instructions make this product the easiest to use out of all of the brands. I am pleased with my purchase, feeling I made the right choice. My package arrived quickly, and gave good protection for the products enclosed.

Highly recommend Simplex as the easiest brand to use, giving great results, too. I was able to show a class how to use these quickly, making the job simpler, they all returned their results which will be studied next week.