General description Convenient to use and easy to operate, this soil pH meter is a solid quality tool designed for testing soil pH and fertility. It is lightweight and portable, making it suitable for both indoor and outdoor use. This ideal soil testing kit is perfect for flowers, vegetables, gardens, potted plants, lawns, and farms. Technical specifications Material: Plastic Accuracy: ±0.25 pH (20℃), ±0.2 pH (suitable for agricultural or educational experiments) Operating Temperature: 0 - 50°C (32-122°F) Size: 11 x 6 x 3 cm (4.33 x 2.36 x 1.18 inches) Probe Length: 16 cm (6.30 inches) Usage Measure the pH of the soil by inserting the probe into the soil as deep as possible, probing the upper part for about 1 cm. The pH scale ranges from 2.5 to 9, with 7 being neutral; lower numbers indicate higher acidity. Adjust the soil pH according to the specific plant variety. Be careful when inserting the electrodes to avoid touching stones and do not apply excessive force to prevent damage.