Quick & easy measurement of chlorophyl levels in plants leaves 
Measuring area: 10mm
Measuring mode: 2-wavelength concentration difference of optical methods
Sensors: Silicon semiconductor photodiode
Display mode: measuring value: 3 digits liquid crystal display
Measuring times: 2 digits liquid crystal display
Min measuring interval :< 2s
Measuring Range: 9.9-199.9 SPAD
Accuracy: ±1.0 SPAD
Repeat: ±0.3SPAD
Operating temperature: 0-50°C
Storage temperature: -20-55°C