Litmus Indicator Paper - Blue 10 books (pack of 200)
L2181-10bk



When blue litmus paper is placed in a substance that is acidic, it will turn to red.

In neutral or alkaline solution it will remain blue

Indicators and the pH scale - The pH scale and neutralisation - KS3  Chemistry Revision - BBC Bitesize

Unit Qty: ea
Availability: 2 in stock