SPAD-502 PLUS chlorophyll Meter can measure relative content of chlorophyll, non-destructive to leaves. Measured datum will be displayed in trend graph. It can be used to enhance the utilization rate of nitrogen fertilizer.

Technical parameters

Measuring mode: 2 wavelengths optical density difference

Measuring area: 2 mm×3 mm

Sensor: Silicon semiconductor photodiode

Display mode: LCD, 4 decimal places, tendency chart

Measuring range: -9.9 to 199.9 SPAD units

Memory capacity: 30datum, automatically calculate and display average value

Power: 2 AA batteries (1.5V)

Battery life: More than 20,000 times

Test interval: 2s

Accuracy: Within ±1.0 SPAD units (for SPAD value between 0 and 50 under normal temperature)

Repeatability: Within ±0.3 SPAD units (for SPAD value between 0 and 50)

Reproducibility: Within ±0.5 SPAD units (for SPAD value between 0 and 50)

Working environment: 0-50°C

Other functions: alarm; calibration

Weight: 0.8KG 

Size: 23*19*11CM