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Apogee Instruments

Apogee Instruments MQ-500 Full-Spectrum Quantum PAR Meter - Digital PPFD Meter for Indoor Grow Lights, Sunlight & Plant Monitoring

  • Based on 35 reviews
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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Sep 15 – Sep 19
Order within 5 hours and 56 minutes
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Style: MQ-500


Features

  • DR BRUCE BUGBEE: Apogee PAR meters have been designed and refined by Dr. Bruce Bugbee, a world-famous crop physiologist.
  • PREMIUM QUALITY: The MQ-500 is preferred by scientists and serious growers for accurate PAR measurements. Our meters stay accurate and reliable while other budget PAR meters can have readings drift by over 50%.
  • FEATURES: The rugged detector measures photosynthetic photons from 400-700 nm from any light source by taking instantaneous or logged measurements.
  • RUGGED DESIGN: The sensor head is made of machined aluminum and fully potted, making it waterproof and rugged. The tangle-free cable facilitates measurements over a large plant canopy, while still allowing the user to view the high-contract display screen.
  • MANUFACTURED IN THE USA: All meters are backed by our four-year warranty and supported by our US-based customer support team.

Package Dimensions ‏ : ‎ 9.69 x 6.38 x 2.32 inches; 6.4 ounces


Batteries ‏ : ‎ 1 Lithium Metal batteries required. (included)


Date First Available ‏ : ‎ January 1, 2022


Manufacturer ‏ : ‎ Apogee Instruments


Best Sellers Rank: #148,086 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #55 in Lab Photometers & Light Meters


#55 in Lab Photometers & Light Meters:


Customer Reviews: 4.3 4.3 out of 5 stars 35 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 15 – Sep 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Par meter
Style: Apogee Instruments MQ-500 Full-Spectrum ...
Expensive, however, very helpful!!!
Reviewed in the United States on June 30, 2025 by William Dietrich
    • Overpriced. That's straight to you Dr. Bruce. President of Apogee Instrument,
Style: MQ-500
lead plant scientist for Utah state university and for NASA space plant experiments. I was excited to buy this piece of kit till I received it. Since I have no other par meter than a phone app to compare, this review isn't about testing it but value for you money. The light sensor is the heart of the system. So far it seems more responsive to PAR than other light meters. Theres 1-2 stars Bruce. Then it falls straight on its face for build quality. I'll start from the outside and work my way in. Soft case? Are you kidding Bruce? This is a sensitive piece of electronic equipment. Or you have us thinking so due to you vids. Softcase? Get real in protection. Build of the box/display. Absolutely 6th grade quality. Yes i opened it. Cold solder joints! Shame on you. My neighbor kid could find a better enclosure at 1/3 your price and 3 times your build quality. And solder better than this device. All said,with Apogee, I expect readings to be accurate hence the purchase. Should I find later, the meter is inaccurate, I will update this review to a more negative. At this time, 4 stars for presumed accuracy based solely on the light sensor chosen. ... show more
Reviewed in the United States on December 31, 2024 by j
    • Seems pretty stable
I've owned this for about a year now. Seems to be accurate (I have no control test). Seems to hold true. Good product!
Reviewed in the United States on October 28, 2024 by Josh
    • Amazing
Perfect for your grow!
Reviewed in the United States on August 15, 2024 by Ted R.
    • After trial
Style: SQ-520
Good product and quality!
Reviewed in the United States on September 1, 2022 by pruksakan
    • Expensive
Love it, don’t like the price.
Reviewed in the United States on October 11, 2024 by Growbro
    • Too difficult to use from inadequate directions
Too difficult to use from inadequate directions
Reviewed in the United States on January 16, 2023 by gmolorin
    • Apogee MQ-500,VBR-100,Everfine are same, but DANOPLUS DP-355 are 10% higher on PAR data.
Review Image by TOMOKAZU SUGITA TOMOKAZU SUGITA
Under pure 660nm LED grow light, MQ-500(569USD), VBR-100 PAR Meter(57USD), and Everfine(1200USD) are almost the same, but DANOPLUS DP-355 are 10% higher. I wonder why DANOPLUS DP-355 has 300+ sales monthly?
Reviewed in the United States on March 14, 2024 by TOMOKAZU SUGITA TOMOKAZU SUGITA

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