NO MESS UP: The strips are made of high quality plastic. Unlike paper strips, they won't soak in samples or in water, so you don't have to worry about contaminating your hands. PROFESSIONAL GRADE: Natureland Vaginal pH Test Strips is the only product with individual packages. You don't have to open up a whole pack then worry about those strips invalid because of humidity. EASY TO READ: Because the reagents (the color squares) are affixed to a plastic strip, there's no paper, no bleeding, and no mess. You can read the result in 20 seconds. HIGH QUALITY: Made and calibrated specifically to test vaginal pH. GET MORE STRIPS: You get 80 quality pH strips in each package.