Digital Instant N-P-K Tester

The Digital Instant N-P-K Tester is a precision handheld device designed to quickly and accurately measure the key nutrient levels—Nitrogen (N), Phosphorus (P), and Potassium (K)—in soil samples. This tester provides farmers, agronomists, horticulturists, and researchers with instant insights into soil fertility, enabling optimized fertilizer application and better crop management. Featuring advanced sensor technology combined with digital display and intuitive controls, this portable tester delivers fast, reliable readings without the need for complicated lab procedures or chemical reagents. Its lightweight design and user-friendly interface make it ideal for field use and on-site soil testing. The device supports multi-parameter detection with high sensitivity and precision, presenting results in clear numeric values on an LCD screen. With built-in data storage and connectivity options (such as USB or Bluetooth in some models), users can track and analyze soil nutrient trends efficiently.

Operating Instruction of Digital Instant N-P-K Tester

1. Take off the protective cap from the metal probe
2. Press OFF/ON button Tester display “0″.
3. Quick testing: Water the soil with distilled water before testing. Make sure the water can go 10 cm deep at the least. The best humidity is 60%-80%. Insert the metal probe into the soil vertically and clockwise, to about 6-8 cm deep. Make sure the soil have thorough contact with the metal probe. After about 6 seconds, the tester will display the measured value. The tightness of soil will affect the measuring result. Multiple tests at the same and different points should be performed and take the average as the Final result.
4. Accurate testing: use a container, mix dried water at the rate of 3:1. Stir and make it into a mud form. Put the metal probe into the mud about 6-8 cm deep. In about 6 seconds, the tester will display the measured value.
5. Wipe the metal probe with a towel or tissue paper after each test. Make it clean and dry. till the display shows “0″.

Technical Specification (6 Position):