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

★★★★★ 4.4 144 reviews

$513.97
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$513.97
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Free shipping Free 30-day returns

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Product details

Management number 208579836 Release Date 2026/03/22 List Price $205.59 Model Number 208579836
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  • DR BRUCE BUGBEE: Apogee DLI PAR meters have been designed and refined by Dr. Bruce Bugbee, a world-famous crop physiologist
  • DLI-500 FULL-SPECTRUM METER: Provides research-grade measurements of PAR (PPFD), DLI, and photoperiod from 400-700 nm for all plant grow-lighting. It records spot measurements and daily light integral (DLI) in mol·m-2·d-1 and photoperiod in 0.2-hour increments for up to 99 days. Monitoring and adjusting the DLI (total photosynthetic photons in a 24-hour period) and photoperiod (hours of light) are crucial for optimizing plant health, flowering, and other morphology effects. PPFD, DLI, and photoperiod data can be viewed onscreen or downloaded via USB-C for analysis.
  • RUGGED AND VERSATILE: IP65-rated for durability in harsh environments. Can be placed on any surface or mounted with standard camera equipment. Includes protective case, soil stake, AAA batteries, USB-C cable, screwdriver, and QuickStart guide.
  • MANUFACTURED IN THE USA: All meters are backed by our four-year warranty and supported by our US-based customer support team.

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4.4 out of 5
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