Universal pH Indicator paper book comes in books of 80 strips that can easily be detached from the book on a perforated line.

All you have to do is just dip in and read off! Use these pH indicator strips for rapid measurement of pH in a liquid sample.

They can be used with liquids at any pH from 1 to 14 (Strong alkaline to strong acidic solutions) 

A pH of 7.0 is neutral, below 7.0 is acidic and above 7.0 is alkaline. 

Dimensions of individual strips are 10mm x 60mm