Portfolio Categories: Light

LI-191R Line Quantum SensorThe LI-191R Line Quantum Sensor measures PAR integrated over its 1-meter length. It is used to measure sunlight under a plant canopy, where the light field is non-uniform. The LI-191R makes it easy to measure under-canopy light in many plots quickly and consistently. It measures light in units of Photosynthetic Photon Flux...

LI-190R Quantum SensorThe LI-190R measures Photosynthetically Active Radiation (PAR, in µmol of photons m-2 s-1). It provides accurate measurements—in the open, in greenhouses, under plant canopies, or in growth chambers—for most broad-spectrum light sources, including natural sunlight, artificial, or mixed sources. Plants use light in the wavelength range from about 400 to 700 nm to drive...

LI-180 SpectrometerPlant growth and reproduction are driven by photosynthetically active radiation (PAR), defined as wavelengths between 400 and 700 nanometers. This interval is often separated into three distinct “color” bands for plant research. Modifying the intensity of red, blue, green wavelengths, along with additional near-UV (380-400 nm) and far-red (700-780 nm) bands, can influence a...

Greenhouses and growth chambersUnderstanding Plant Health and Light Management Starts with Accurate Measurements. LI-600 Porometer/Fluorometer: Better understand plant stress with stomatal conductance and chlorophyll a fluorescence measurements. LI-250Q PAR Package: Take instant measurements of photosynthetically active radiation (PAR). LI-1500 DLI Package: Calculate Daily Light Integral (DLI) and log continuous PAR measurements. LI-180 Spectrometer: Record the spectral output of your light sources at...