Feature:
*pH test paper can be applied for school, lab, aquarium, tap water, soil, hydroponics, lemon juice, milk, etc.
*pH indicator paper can test from 1 to 14. 1-3 indicates strong acidic, 4-6 indicates weak acidity, 7 indicates neutral, 8-11 indicates weak alkalinity, 12-14 indicates strong alkalinity.

Specification:
Material: Made of the highest quality PH paper for almost instantaneous results Size:
Each Pack Size: 2.75"*1.77" (70x45mm)
Each Piece Size: 2.1"*0.35" (53x9mm)
Total Weight: 74g
Package Includes:8 Pack pH test papers (640 PCS)
How To Use?
1.Take a strip of litmus paper
2.Dip the solution in and drop it on the litmus test strips
3.Compare the changed color with colors table to get the solution's pH
Friendly Reminder:
1.The pH test paper strip color changes must compare with the pH color table within 15 seconds.
2.Please store the pH test strips in a dry place away from light.
3.Our pH test strips can not indicate the acid or alkali solution when its density was lower than 0.01%.