Features: Easily determine the acidity or alkalinity of various substances with these Indicator Paper Strips. Perfect for testing aquarium water, urine, soil, and more. These Reagent Paper Strips come with a color chart from 1 to 14, allowing you to quickly assess the level within seconds. Suitable for anyone in need of testing, from home users to professionals. A must have tool for scientists, pet owners, and conscious individuals. Use these Paper Strips in a wide of scenarios test the acidity of fruits and vegetables, analyze soil conditions, or even measure the of cosmetics. Take control of your environment with these convenient and reliable testing paper strips. Make informed decisions based on accurate measurements. Specifications: Material: Paper Size: Approx. 143x45mm/5.63x1.77in Type: 1/2 Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 10 Pack Litmus Paper(800 Strips Altogether)