Apogee Instruments - MQ-500-L-5: Full-Spectrum Quantum Meter (5 m Lead)

Brand: Apogee Instruments

The Apogee MQ-500-L-5 is the premium full-spectrum quantum meter trusted by scientists and serious growers, configured with a 5 m sensor lead for reaching across benches and canopies. It measures PAR (PPFD) from 400 to 700 nm, accurate under all light sources, including narrow-band and broad-spectrum LEDs.

The handheld displays real-time PPFD, logs samples, and computes average intensity and daily light integral (DLI). The separate sensor is IP68 waterproof and reads 0 to 4000 umol m-2 s-1.

Key Features

• Full-spectrum PPFD, 400 to 700 nm; range 0 to 4000 umol m-2 s-1
• Calibration uncertainty +/- 5 percent; drift less than 2 percent per year
• IP68 waterproof sensor on a 5 m lead
• Real-time readout with sample logging and DLI
• Built and calibrated in Logan, Utah; NIST-traceable, made in the USA, and backed by an industry-leading 4-year warranty.

Why Choose This Model

The MQ-500 line is the gold-standard handheld PAR meter; the 5 m lead makes it easy to map light across large rooms without moving the display.

Ideal Applications

• Canopy PPFD spot checks and light mapping
• Fixture commissioning and uniformity checks
• Greenhouse and indoor cultivation