Apogee Instruments DLI-500 PAR, Daily Light Integral, and Photoperiod Meter - Full-Spectrum 400-700 nm Light Measurement Tool for Plants & Agriculture

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Apogee Instruments DLI-500 PAR, Daily Light Features

• DLI-500 FULL-SPECTRUM METER: Gives research-grade measurements of PAR (PPFD), DLI and photoperiod from 400-700 nm under all grow-lighting used for plants. The meter takes spot measurements and records and displays daily light integral in mol·m-2·d-1 and photoperiod in 0.2 hours increments for up to 99 days.

• PAR/DLI/PHOTOPERIOD: Measuring and controlling the daily light integral (the total photosynthetic photons falling on a plant in a 24-hour period) and the hours of light a plant receives (photoperiod) is critical for optimizing plant health, triggering flowering, and inducing other plant morphology effects. PPFD, DLI, and photoperiod data can be viewed onscreen or downloaded via USB-C for analysis.

• RUGGED AND READY TO USE: Built tough and rated IP65 to withstand harsh and wet environments. Unit can be placed directly on any level surface or mounted by attaching to commonly available camera tripods, clamps, or stakes using the standard camera-sized ¼-20 threaded port on the bottom. Protective case, meter, soil stake, AAA batteries, USB-C cable, screwdriver, and QuickStart guide are included.

• BUILT FOR SCIENTISTS AND SERIOUS GROWERS: Developed for use by the Apogee Instruments’ engineering team under the direction of world-renowned crop physiologist, Bruce Bugbee, PhD. Calibration is NIST traceable to accurately measure combined intensity of photons between 400 and 700 nm to give a single sunlight PAR reading within 5 % uncertainty. Unlike hobby-grade PAR meters that drift out of calibration quickly, our meter has a stable drift rate of less than 2% per year.

• MADE IN THE USA: All meters are designed, built, and calibrated at our headquarters in Logan, Utah, USA. Apogee Instruments has been creating research-grade instruments for scientists and serious growers for over 25 years. All meters are backed by our industry leading four-year warranty and supported by our world-class, US-based customer support team.

About Apogee Instruments DLI-500 PAR, Daily Light