Function: It is lightweight and portable, convenient for indoor and outdoor use. 2-in-1 soil tester: PH Fertile Tester - Helps to control the pH level in the soil, acidic or alkaline is suitable for your plants. It does not require batteries, it is easy and convenient to use. Made of high-quality ABS material, sturdy and durable. The ideal soil testing toolkit for flowers, vegetables, gardens, indoor potted plants, lawns and farms. Speciation: Material: ABS Size: approx. 18 x 6 x 3 cm or 7.1 x 2.4 x 1.2 inches How to use: 1. ) first pull 5 cm of soil up and crush the soil to a depth of 13 cm. And remove organic impurities that will affect the test result, such as leaves, roots, etc. 2. ) Saturate the soil with water until the soil becomes slimy (better to use rainwater or distilled water) 3. ) Press this implement button to select "PH" or "FERTILIZER" 4. ) Clean the probe. 5. ) insert the entire probe into the soil. 6. ) Read the test result 1 minute later. 7. ) Clean the probe after use. Analysis of the results: "Not enough" means you need to spread fertilizer 1. Fertilizers dissolved in water, then water combined with the addition of nutrients to the crops 2. Watering plants or replanting plants should be combined with three weeks after fertilization, and monthly when this happens. "Perfect" means OK. Combined with watering, we fertilize once a month "Too much" means that there is currently no need to fertilize. watering only You will be planting to transplant into new soil There should be plenty of water for plants in the greenhouse, too much dilute nutrient leaching Do not allow any chemical fertilizer, but can be applied to manure, compost, plant residues, etc. Package List: 1 x Soil pH Meter