PlantPen NDVI & PRI
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 hand-held, battery-powered devices that help to characterize plants by means of reflectance. PlantPens measure and calculate specific reflectance indices to monitor chlorophyll content, photoprotecting carotenoids, and other important aspects of live foliage. Two standard PlantPen versions measure the most common indexes: Photochemical Reflectance Index (PRI) and Normalized Difference Vegetation Index (NDVI.). Comprehensive FluorPen 1.1 software provides data transfer routines and many additional features for data presentation in tables and graphs.