• Mesureur de chlorophylle

Mesureur de chlorophylle


The SPAD 502 Plus Chlorophyll Meter instantly measures chlorophyll content or “greenness” of your plants to reduce the risk of yield-limiting deficiencies or costly overfertilizing.

The SPAD 502 Plus quantifies subtle changes or trends in plant health long before they’re visible to the human eye. Non-invasive measurement; simply clamp the meter over leafy tissue, and receive an indexed chlorophyll content reading (-9.9 to 199.9) in less than 2 seconds. Assess nitrogen needs by comparing in-field SPAD readings to university guidelines or to adequately fertilized reference strips. Research shows a strong correlation between SPAD measurements and leaf N content.

Features

  • Instantly measures chlorophyll content or “greenness” of your plants on a scale of -9.9 to 199.9
  • Non-invasive, non-destructive measurement
  • Trend graph stores and displays up to 30 measurements
  • Waterproof design
  • Compare in-field SPAD readings to university guidelines
  • Research shows a strong correlation between SPAD measurements and leaf N content
  • Available with or without a built-in data logger
  • Includes hard carrying case and batteries


Optical Density Difference at two wavelengths 650 nm and 940 nm
Measurement Area 2 mm x 3 mm (Approximately 3/32 in x 1/8 in)
Light Source 2 LEDs
Receptor Silicon Photodiode
Power Source 2 AA alkaline batteries (1.5V)
Repeatability Within ±0.3 SPAD unit
SPAD Value Index of relative chlorophyll content; -9.9 to 199.9