Apogee MQ-500 Full Spectrum Quantum PAR Meter

Apogee MQ-500 Full Spectrum Quantum PAR Meter


Regular price $ 545.00 $ 530.00 Sale


Apogee is temporarily out of stock on MQ-500 units and we expect to have them back in stack by Feb 1. 

Apogee Instruments is proud to announce our new quantum sensor with an improved spectral response providing accurate PAR/PPFD measurements under all light sources, including LEDs.

includes quantum sensor and attached meter with cable. Optional accessories available. 

The MQ-500 is a full spectrum quantum sensor with a spectral range of 389 to 692 nm ± 5 nm, which can be seen in the graph below. This improved spectral response increases the accuracy of LED measurements.

Refined Spectral Response

The improved spectral response of the MQ-500 increases the accuracy of LED measurements making it ideal for use with both natural and electric light sources.

Cosine Response

This cosine-corrected sensor is designed to maintain its accuracy when radiation comes from low zeith angles. The sensors measure PPFD with a cosine response accurate within
± 5 % at 75 ° zenith angle.

Rugged Design

Head is potted solid making it submersible and suitable for use in all climate conditions.

Warranty and Support

All Apogee products are backed by an industry-leading four-year warranty and outstanding customer support.

Download Product Manual

Calibration Uncertainty ± 5 %
Measurement Range 0 to 4000 µmol m-2 s-1
Measurement Repeatability less than 0.5 %
Long-term Drift (Non-stability) less than 2 % per year
Non-linearity less than 1 % (up to 4000 µmol m-2 s-1)
Response Time less than 1 ms
Field of View 180°
Spectral Range 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 % of maximum)
Spectral Selectivity less than 10 % from 412 to 682 nm ± 5 nm
Directional (Cosine) Response ± 5 % at 75 ° zenith angle
Azimuth Error less than 0.5 %