2 in 1 High Precision Fertile Soil PH Tester Meter for Garden Plant Flower Feature: It's lightweight and portable design, convenient for indoor and outdoor use. 2 in 1 Soil Tester: PH & Fertile Tester - Help you to control Ph level in soil, acidic or alkaline is suitable for your plants. No battery needed, easy and convenient e. Made of ABS material, sturdy and durable. Ideal soil test tool kit for flowers, vegetable,gardens, home potted plants, lawn and farm. Speciation: Material: ABS Size: Approx. 18x6x3cm / 7.1x2.4x1.2in How e: 1.)firstly pull the 5 cm soil in upside, and crush the soil until 13cm deep. And clear the organic impurity which will effect the test result, such as leaves,roots,etc... 2.)Saturated the soil with water,until the soil become slimy(It's better e rain water or distilled water) 3.) Press this instrument button to "PH" or "FERTILIZER" 4.)Clear the probe. 5.)insert the whole probe into the soil. 6.)Read the test result 1 minute later. 7.)After using it, please clear the probe. Result analysis: "Too little" means you need to spread fertilizer 1. The fertilizers dissolved in water, then water combined with added nutrients to crops; 2. Plant or transplanting plant watering should be combined with three weeks after fertilization, and each month when watering plants do. "Ideal" means ok. Combining with the watering, fertilizing once a month "Too much" means no need fertilizer currently. Just watering; You will plant to transplanting to the new soil; For the plants in the greenhouse, should be a lot of water, dilute nutrient leaching too much; Don't let any chemical fertilizer, but can be applied into the manure, compost, plant residues, etc. Package list: 1 * Soil pH meter