pMake accurate alkalineacid tests with these litmus paper stripsbrEach book also includes a colour chartph3Specificationsh3pScale reads from 1 to 14br1 - 3 indicates a very acidic substancebr4 - 6 indicates an acidic substancebr7 indicates neutralbr8 - 11 indicates alkalinitybr12 - 14 indicates very high alkalinityph3Notesh31. Please allow slight chromatic aberration in the photo br2. Due to manual measurement, the size may deviate