What You Get: The package contains 5 packs of pH test paper. Each pack contains 80 pieces, 400 pieces in total, enough quantity for your long-term use and meet your different needs^Lightweight and Portable: Each small piece is about 5 x 1cm, right size and light weight for easy carrying and storage; Please note that the test strip must be stored in a dark and dry place.^pH 1-14: The scale indicates 1 to 14, 1-6 indicates an acidic substance, 7 indicates neutral, 8-14 indicates alkalinity; The test strip color changes must match the pH scale color chart within approximately 15 seconds^Application: Under normal circumstances, the solution of the tasting paper will cause color changes a few seconds after contact with the test paper. Remove the small test strip and compare the test results to the standard color on the box. The smaller the number, the stronger the acidity, and the larger the value, the stronger the alkalinity^Usage: The universal pH 1-14 test paper strips can be used to test water, swimming pool, fish tank, soil, milk, detergent by testing many common everyday substances Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.