describe: illustrate: 100% brand new and high quality Used for indoor and outdoor plants, gardens and lawns. Save water and energy, keep your plants, lawns, and flowers in perfect condition. Easy to use, just insert and read. No battery required, easy to use. Specification: Material: Plastic Colour: Black Size: approx. 260x105x30mm / 10.24x4.13x1.18 inches pH range measurement: 0-9 Fertility range: too little, ideal, too much Analyze the pH/fertility value: 1. Remove about 5 cm of topsoil, and then dig the soil to a depth of 13 cm. And remove all organic impurities in the soil that affect the test results, such as leaves and roots. 2. Moisten the soil with water to make it muddy. (It is better to use rainwater or distilled water.) 3. Set the function key to the far right (for fertility analysis: the far left). 4. Wet the probe. Wipe one of the three probes on the far right with a clean cotton cloth (fertility test: wipe all probes). 5. a) pH analysis: Insert the probe completely into the soil to be tested. Wait for 1 minute to read the data. b) Fertility analysis: Insert the probe into the soil until the distance between the host and the soil is less than 2.5 cm. Wait at most 10s, and then read the data after the pointer is stable. 6. After the test, wipe and dry the probe. Fertility analysis Unit: ppm (parts per million) Lack (too small): Nitrogen: less than 50ppm Phosphorus: less than 4 ppm Potassium: less than 50ppm Ideal range (ideal): Nitrogen: 50-200ppm Phosphorus: 4-14ppm Potassium: 50-200ppm Excess (too much): Nitrogen: more than 200 ppm Phosphorus: more than 14ppm Potassium: more than 200ppm The package includes: 1 piece 2 in 1 soil tester