PSI's PlantPen is a reflectance-based device that provides a convenient, low-cost method of measuring the relative chlorophyll content of attached or detached leaves.
PlantPens are portable, battery-operated devices that help characterize plants by reflectance by calculating specific indices to monitor chlorophyll content, photoprotective carotenoids, etc.
There are two versions of the PlantPen: Photochemical Reflectance Index (PRI) and Normalized Difference Vegetation Index (NDVI).
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|Type of Instrument||Chlorophyll Meter|
|The instrument measures:||Chlorophyll|
PlantPen is a reflectance-based device that provides a convenient, low-cost method of measuring the relative photosynthetic pigments content of a leaf sample.
PlantPens measure and calculate particular reflectance indices to assess chlorophyll content, photoprotecting carotenoids, and other important features in live foliage.
Two standard PlantPen versions measure the most common indexes:Photochemical Reflectance Index (PRI)and Normalized Difference Vegetation Index (NDVI). Measured data are sequentially stored in the internal FluorPen memory. Comprehensive FluorPen 1.1 software provides data transfer routines and many additional features for data presentation in tables and graphs.
- Rugged and compact device
- Easy-to-use two-button operation
- Integrated GPS module
- Comprehensive software for data processing
- USB and Bluetooth communication for data transfer
- Li-ion rechargeable battery via USB port of a PC
PlantPen PRI 210: measures Photochemical Reflectance Index (PRI) by comparing leaf reflectance in two narrow wavelength bands centered close to 531 nm and 570 nm. PRI is sensitive to changes in carotenoid pigments that are indicative of changes in photosynthetic light use efficiency, the rate of CO2 uptake and as a reliable water-stress index. As such, it is used in studies of vegetation productivity and stress.
PlantPen NDVI 310: measures Normalized Difference Vegetation Index (NDVI), which is an important indicator of chlorophyll content in plants. The pigment in plant leaves, chlorophyll, strongly absorbs visible light (from 0.4 to 0.7 µm) for use in photosynthesis. The cell structure of the leaves, on the other hand, strongly reflects near-infrared light (from 0.7 to 1.1 µm). The differences in plant reflectance in the visible and near-infrared wavelengths are used to calculate NDVI index. NDVI is directly related to the photosynthetic capacity and hence energy absorption of plant canopies.
- Control and Data Unit for Handheld Devices
- Small, portable notebook (type according to current availability on the market).
- Substitute USB Communication Cable
- Substitute USB cable allowing connection between the "pen" devices and a PC (the device is delivered with one USB cable, which is included in the device price).
- Self-Adhesive Rubber Pads
- One set includes 10 solid pads (to be attached to the clip) and 10 pads with an opening (to be attached at the optical head).