Professional soil test strips: the test area of the soil pH test strip is between 3.5 and 9.0. The accurate and reliable test results can help you analyse the soil. The pH test paper is PVC based and is equipped with a 4-part filter paper test module. Practical and easy to use: Place the soil test strip in the soil and water solution for 3 seconds and remove it. After standing for 1 minute, compare the 4-piece colour block with the standard plate to get the corresponding pH value. Anyone who knows no chemical knowledge can do this in minutes. Large pH soil test area: the detection range of pH test paper is 0-14, 4 colour panels as a group. Test the pH of your soil quickly and accurately. With the colour chart on the packaging box, the numbers can be read very clearly and get the result of the pH value. You can create a scientific planting plan based on the soil test result. 150 pieces & easy to carryThe set contains 150 high-quality pH filter paper test strips, one for each use, which can be used 150 times for a long time. Bottle packaging, good sealing, long-term storage, easy to carry and measure anywhere. Wide range of applications: suitable for soil examination of plants outdoors and indoors, gardens and lawns, fruit, flowers, vegetables, shrubs, etc. It gives you a comprehensive understanding of the soil condition of garden and lawn. Very suitable for pH tests at home, laboratory or school. Specially calibrated for soil pH tests pH 0-14 range for almost all garden soil types Quick and accurate results Enough test strips for 150 pH tests Contains 14 full-colour application tables for pH tests Product parameters: Material: PVC Weight: 40 g Size: 80 mm Number of colour blocks: Pack of 4 Colour block width: 6 mm pH test range: 0-14 pH (0-6.5 acidic, 6.5-7.5 neutral, 7.5-14 alkaline) Measuring accuracy: 1.0 Liquid contact time: 3S