HCT pH tests strips are suitable for all media in environmental analysis and in industrial in-process controls. Using these test strips is fairly easy, the pH value is measured by visual comparison of the four reaction zones on the test strip with the fields of the color scale, perfectly matching the reaction color. MEASURE pH LEVEL Our pH test strips are ideal for testing the pH level in a wide range of products: water, human and pet urine, saliva, soil, soap, skincare, and more. FAST RESULTS Take one strip from the case and dip it into your solution. The strip colors will change almost instantly. Quickly match these colors against the color chart on the case to obtain the pH. The number above the matching color is your pH level. PROPER STORAGE To ensure accuracy, store these pH strips in their original packaging and in a cool, dry place away from sunlight. pH FULL RANGE AND INTERVALS Our pH 0-14 test strips are offered in increments by 1 pH unit. The pH color chart intervals cover: 0 (very acidic), 1, 2, 3, 4, 5, 6, 7 (neutral), 8, 9, 10, 11, 12, 13, 14 (very basic). 1 bottle contains 100 strips PLEASE READ :) :) :) - Once payment is confirmed by SHOPEE, orders are picked up within 2 DAYS (especially if you ordered during the weekend). DELIVERY to Metro Manila takes another 2-5 days and DELIVERY to PROVINCIAL AREAS takes another 3-8 days. - For orders that aren't qualified for Free Shipping, shipping fee will appear upon check out. - Once the package has been shipped, Tracking Numbers are provided and can be seen on your order details. Once your order is picked up by the courier, sellers do not have visibility of the package. It is the responsibility of the buyer to track their own package.