Plant Nutrition Analyzer PNA-4 (CAT#: STEM-OEM-0362-ZJF)

The Plant Nutrient Analyzer enables non-destructive, real-time monitoring of plant physiological parameters without affecting plant growth. It measures leaf temperature, nitrogen content, relative chlorophyll concentration, and leaf humidity. This device is widely used in agricultural and forestry research, academic studies, and field guidance for crop management and plant science.

Display: 1.3-inch OLED screen
Chlorophyll Measurement Range: 0.0 to 99.9 SPAD
Chlorophyll Measurement Accuracy: ±1.0 SPAD (0-50 SPAD at room temperature)
Leaf Surface Temperature Range: 0 to 50°C
Leaf Surface Temperature Accuracy: ±2°C
Leaf Surface Humidity Range: 10% to 80%
Leaf Surface Humidity Accuracy: ±5%
Nitrogen Content Range: 0.0 to 99.9 mg/g
Nitrogen Content Accuracy: ±5%
Measurement Area: 2 × 2 mm
Maximum Measured Thickness: 1.2 mm
Sample Insertion Depth: Max. 12 mm
Measurement Interval: 2 seconds
Data Transmission: Bluetooth
Power Supply: 1.5V ×2 dry batteries (up to 5000 continuous measurements)
Data Storage: 2000 entries onboard, unlimited via app sync
External Size (W×D×H): 165 × 83 × 50.5 mm
Package Size (W×D×H): 340 × 300 × 150 mm
Net Weight: 0.2 kg
Gross Weight: 2 kg

Multi-point and multi-stage calibration technology ensures high measurement accuracy and reliability.
Anti-interference structural design blocks ambient light and temperature fluctuations for stable data.
Displays average, maximum, and minimum values from the last 30 data sets.
Bluetooth connectivity enables real-time app sync and unlimited data storage.
Low battery alert activates at 20% power level.

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