HOW THE METER WORKS
Chlorophyll transmission is characteristically high in the
near infrared range and very low in the red range because
green plants absorb visible radiation for photosynthesis and
transmit near infrared, which they do not use.
The CCM-200 uses LEDs
that emit specific wavelengths in the red and infrared
ranges. The detector analyzes the ratio of the two
wavelengths to determine chlorophyll concentration index (CCI).
For an example showing a
leaf transmission spectrum and CCI calculation, click here
 |