Virtual Hydromet

Apogee InstrumentsModel DLI-400-500-600 -PAR, DLI, and Photoperiod Meters (DLI-400-500-600)

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Apogee DLI meters are a rugged, simple-to-use device for spot checking PAR or ePAR levels while automatically recording the daily light integral and hours of light (photoperiod) for up to 99 days.