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The Research Products RP-410, also called the PolyPen, is a handheld device for measuring spectral reflectance in leaves. It has an internal Xenon incandescent lamp that lights in the range of three hundred eighty to one thousand fifty nanometers. The PolyPen includes either a UVIS detector for the range of three hundred eighty to seven hundred ninety nanometers or a NIR detector for six hundred forty to one thousand fifty nanometers. This unit computes reflectance indices such as NDVI, NDGI, and PRI and offers options for custom index programming.
The PolyPen displays data on a touchscreen as graphs or data sheets and stores it as full spectra. It includes a leaf clip, integrated GPS, and a splash-proof case, making it suitable for various environments. The device also utilizes PolyPen 1.0 software for data processing.
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