Features: High quality intimate-feminine vaginal pH balance test strips are designed detect pH-levels easily and accurately. Test card is very simple to use, easy to test-at home, ready to-focus on their own-health. The vaginal test strips allow you to quickly know if you have gynecologic inflammation in a simple and-intuitive way so that you can see a doctor in time-. Test strips are not disturbed-by-VC, using sealed bottle storage. Shelf life is 2years, please use as soon as possible after opening, and keep in dry place away from light. The result will be obtained by taking the female private secretion on the test paper with a cotton swab and comparing it with the color-card after 30 seconds under normal light and temperature. Specifications: Material:Paper Size:Approx.6.5x0.5cm/2.55x0.19inch Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1 Barrel Vaginal PH Testing Strips