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Comparison of quantum PAR sensors

Discussion in 'Orchid Culture' started by naoki, Apr 11, 2019.

  1. naoki

    naoki Well-Known Member

    Likes Received:
    Fairbanks, Alaska
    I happen to find this documents by Apogee comparing many different Quantum sensors (probably they covered all available ones):


    Some results are quite interesting (e.g. how Hydrofarm lied about the spectral response).

    Also, here is another comparison of Apogee, Li-Cor, and Seneye (which might be ok for reef aquarium, but not for plants):

    BRS also have 7 day rental for Apogee (MQ-510 and MQ-210). These have the calibration factors for underwater application, so to use them for plants, you need to divide the PPFD values of MQ-510 and MQ-210 by 1.32 and 1.08, respectively (info about Immersion Effect Correction Factors).
    xmpraedicta and ezluckyfreee like this.