Specifications: Take accurate alkaline/acid tests with this pack of 160 litmus paper strips. Each book also includes a color chart. The Scale Reads from 1 to 14: 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. Type: Litmus Papers Quantity: 2 Books (160 Strips) Material: Paper Features: Useful Alkaline Acidic Test Note: Due to the light and screen setting difference the item s color may be slightly different from the pictures. Package Includes: 2 x Books Litmus Papers (Each Book 80 strips) (160 Strips in Total)