1、Comprehensive Nutrient Analysis: This NPK soil tester kit includes three individual testers for nitrogen, phosphoric and potassium. It quickly analyzes key nutrient levels in soil fertilizers, providing essential insights for optimal plant growth and fertilizer management. 2、Quick Measurement: Utilizing advanced technology, this kit quickly measures nitrogen, P, and potassium levels in soil, helping growers make informed fertilization decisions. It features an auto shut off function approximately 10 minutes after use, conserving battery life. 3、High Accuracy: Designed precisely, this tester ensures the accuracy of measurements, significantly improving the growth efficiency of greenhouse crops. Rely on its dependable performance to optimize agricultural productivity with precise nutrient assessments. 4、Large Backlit Display: Equipped with large backlight display, this soil tester provides clear and easy to read numeric results. The backlight feature ensures visibility even at night, making it convenient for use in varying lighting conditions. 5、Portable And Convenient: Packaged with a storage case, this soil NPK tester kit is easy to carry and operate. Its practical design makes it suitable for various planting environments, allowing for on the go testing. Item Type: NPK Soil Tester Kit Material: ABS Weight: Approx. 775.00g/27.34oz Range: Nitrogen: 0 to 1999mg/kg; Phosphoric: 0 to 1999mg/kg; Potassium: 0 to 1999mg/kg; Temperature: -30.0°C to 80.0°C Resolution: Nitrogen Phosphoric Potassium: 1mg/kg, Temperature: 0.1°C; 0.1°F Power Source: Single Unit: 3x1.5V LR44 Button Battery (Battery Not Included) Temperature Compensation: Automatic Compensation Backlight: Support Backlight Auto Power Off: Approx. 10 Minutes Operating Environment: 0°C to 80.0°C; Relative Humidity: Up to 90% Product Size: Approx. 305x40x40mm/12x1.6x1.6in 1 x Nitrogen Tester 1 x Phosphoric Tester 1 x Potassium Tester 1 x Storage Bag 1 x Instruction Manual