The SpectraVue Leaf Spectrometer measures transmission, absorption, and reflection, along with many other plant stress and pigment indicators using built-in indices. Measure the effects of environmental variables on nutrient and pigment quantification and use chemometric modeling to optimize plant health and yield. Leaf spectral data in response to stressors can drive a wide variety of insights into forest health and management practices. Use spectral analysis to conduct non-destructive assays of physiological responses to different environmental conditions.