Universal Indicator Paper. Ph Strips 1 - 14

Universal Indicator Paper - Litmus Paper PH Strips Ph 1 to Ph 14 available in one book of 20 strips or 10 books x 20 strips.

Each book has a colour strip and the box of 10 books has a colour strip on the back.

When taking a reading for soap :Dissolve 5g of soap in 100ml de-ionised water and dip.

For other liquids, always add the liquid to the strip for an accurate reading. 

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