A lightweight handheld meter for measuring the chlorophyll content of leaves without causing damage to plants. Measurement Subject : Crop Leaves Measurement Method : Optical density difference at 2 wavelengths Measuring Mode : 2 wavelengths optical density difference Measuring Area : 2mm x 3 mm Subject Thickness : 1.2 mm Max. Light Source : 2 LED Elements Receptor : 1 SPD (Silicon Photodiode) Display Range : -9.9 to 199.9 SPAD units Memory Function : Memory Capacity upto 30 values, calculation / display of average of data in memory also possible Sensor : Silicon Semiconductor photodiode |