200 Pcs Perfume ph Universal Test Paper for Laboratory USE 0-14 Test Strips
4 Color pH panels for easy to read against pH color chart intervals. The number next to the color on the chart is your pH; The pH scale ranges from 0 (very acidic) to 14 (very basic), 7 is neutral. Quickly match this color against the color chart on the inside of your box to obtain the pH; Do not wait or let the strip dry.