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Photobio Advanced Quantum PAR Meter Current Culture's Cultured Solutions Few marijuana cookbooks address theThe Phantom PHOTOBIO Advanced Quantum PAR Meter provides accurate and cost effective measurement for any light source used in horticultural applications. The Advanced Quantum PAR meter is designed to measure PAR (Photosynthetically Active Radiation) flux in wavelengths ranging from 400 to 700nm. There is a positive proportional relationship between the number of photons absorbed in 400 to 700nm band and the rate of photosynthesis, important for