Litmus Paper 80 pieces PH tester with color values

Litmus Paper is very important when calibrating your analog/digital PH meter. Used to measure full range PH between 1 – 14. It comes with 14 color chart and their respective PH scale values. The test strip color changes can be matched with the color chart within 15 seconds

Features:

• 100% brand new
• High quality
• 80 pieces litmus paper
• Paper size is 45 mm x 7 mm (L x W)

The PH scale is as follows: 

• 1 – 3 : indicates a very acidic substance.
• 4 – 6 : indicates an acidic substance.
• 7 : indicates neutral.
• 8 – 11 : indicates alkalinity.
• 12 – 14 : indicates a very high level of alkalinity.