Litmus Paper Universal pH1-11 20 Strips 10s Supports Knees And Legs acts like an invisible shield

acts like an invisible shield and is the unique way to protect all

No messy powders

and supports healthy skin by stimulating collagen and elastin synthesis

Supports beautiful younger looking skin

Litmus Paper Universal pH1-11 20 Strips 10s Supports Knees And Legs acts like an invisible shieldpH 1 2 3 4 5 6 7 8 9 10 11 10 books per pack Each book has 20 strips Universal Indicator paper is one of the most popular pH test papers. They provide a quick and accurate method of indicating the pH of a solution. Each book has 20 strips and provides over 12. 5m of test paper with its own printed colour chart in steps of 1 pH on the inside cover making it more economical, practical and useful when distributing within the classroom environment.