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PPF & PPFD Guide to Comparing GROW-LEDS

Essential information to compare horticultural lights In the following we would like to introduce you to the PPF and PPFD measures. They are of great importance and can give you essential information on the performance of a light source, which is used to promote plant growth. Furthermore, the PPF value allows you to compare different light sources and select the appropriate substitute for standard light sources, which are used in horticulture. PPF PPF is the abbreviation for “photosynthetic photon flux“. It gives the information on the number of photons, which are emitted by a light source. Only photons in the wavelength range from 400nm to 700nm are considered. This is the so-called PAR (photosynthetic active region) and photons within these wavelengths contribute...

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