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DLI


The Daily Light Integral (DLI) is a tool to measure the total amount of PAR light a crop receives throughout the day (moles per day). It’s a useful tool to see what the DLI is in the greenhouse per month. This allows you to see the difference between summer and winter and other seasons. With this formula, you can see how much extra P.A.R. lighting must be used in seasons where your crop performs less. By using additional lighting you can, for example, achieve the same light values ​​in winter as in summer.

DLI Calculator

The DLI is calculated based on PPFD (light intensity on the crop) and the number of exposure hours. Using our DLI calculator you can calculate how much DLI your lighting receives. Do you want to know how much DLI you receive from the sun per month?  Contact us and we’ll be happy to help you.

Micromole μmol/s (micromole) is the unit in which P.A.R. is expressed. This unit indicates how many micromoles per second a light source emits. μmol/s is one-millionth of a mol (10−6 mol).

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