Size: 10.5*4 cm (Due to manual measurement, there will be an error of 1-3 mm.) Accurate and reliable test results can help you analyze the soil. Material: test paper 1 bottle of 100 test papers, enough to perform 100 soil pH tests, easy to carry and can be measured anywhere. The test range of soil pH test paper is 0-14. Very suitable for testing soil quality for garden, outdoor and indoor. Easy and convenient to use and use, very practical and useful. Usage: Soil test kit, suitable for indoor and outdoor plants, gardens and lawns, fruits, flowers, vegetables, shrubs, etc., can provide you with comprehensive information about the soil conditions of gardens and lawns. How to use? Step 1: Use a tablespoon to put 8 tablespoons (4 ounces) of soil sample into a cup or test jar. Step 2: Use a tablespoon to thoroughly mix 8 tablespoons (4 ounces) of water with the soil sample for 30 seconds. Step 3: Before testing, let the soil/water solution stand for 30 minutes until stratification occurs. Then dip a pH test paper into the solution. Keep the test paper in the solution for 3 seconds. Step 4: After 1 minute, match the color palette with the color card. Application: indoor and outdoor plants, gardens and grasslands, farms, fruits, flowers, vegetables, shrubs, etc. Part list: 100pcs/carton Soil test strips Description: Soil that is too acidic or too basic is a major factor limiting crop yield and quality. Most crops cannot tolerate soils that are too acidic or too alkaline. Therefore, it is very important to understand the pH of the soil. pH range: 0-14 pH (0-6.5 acid, 6.5-7.5 neutral, 7.5-14 alkaline)