{"title":"PAR Meters (Handheld)","description":"\u003cp\u003ePortable handheld PAR, PPFD, ePAR, and DLI meters with a display for spot-checking light intensity at the canopy.\u003c\/p\u003e","products":[{"product_id":"apogee-mq-500-full-spectrum-quantum-meter","title":"Apogee Instruments - MQ-500: Full-Spectrum Quantum Meter","description":"\u003cp\u003e\u003cstrong\u003eFOR SCIENTISTS \u0026amp; SERIOUS GROWERS\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- The MQ-500 full-spectrum quantum meter is the premium tool of choice among leading scientists and serious growers for accurately measuring the photosynthetically active radiation (PAR) from all light sources. An accurate quantum light meter is critical for measuring the intensity of light used in the precision growing of plants and other photosynthetic organisms in greenhouses, growth chambers, farms, gardens, aquariums, and other agricultural systems.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQUANTUM LIGHT METER\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Unlike commonly available LUX or footcandle meters used for measuring light for human vision, our meters feature a laboratory-grade PPFD (photosynthetic photon flux density), or \"quantum,\" optical detector precisely calibrated to measure the light intensity in umol m\u003csup\u003e-2\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003es\u003csup\u003e-1\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eof the specific color wavelengths emitted by LEDs, HPS, MH, sunlight and other light sources that are utilized by plants for photosynthesis.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eRUGGED \u0026amp; EASY TO USE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Quantum sensor uses a precision silicon photodiode detector, a custom optical filter, and an acrylic diffuser all housed in a self-cleaning, dome-shaped, anodized aluminum sensor head. The sensor head is potted solid with epoxy for years of use in harsh environments, including underwater. The handheld meter is attached by a cable and displays real-time readings, records samples, and logs average intensity and daily light integral (DLI) measurements. Unlike the sensor head, the handheld meter is not waterproof.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eEXTREMELY ACCURATE \u0026amp; STABLE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Precisely measures and combines the intensity of all photons between 400 and 700 nm to give a single PAR reading in umol m\u003csup\u003e-2\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003es\u003csup\u003e-1\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003ewithin 5 % uncertainty. Unlike hobby-grade PAR meters, our meter has a stable, accurate calibration with an accuracy drift rate of less than 2 % per year.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eTHREE MEASUREMENT MODES\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- The meter has a spot measurement, sample, and log mode and will record an integrated daily total in mol m\u003csup\u003e-2\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003es\u003csup\u003e-1\u003c\/sup\u003e. Sample mode will record up to 99 manual measurements and log mode will power the meter on and off to make a measurement every 30 seconds. Every 30 minutes, the meter will average the sixty 30 second measurements and record the averaged value to memory, up to 99 averages. Once full, it will overwrite the oldest measurements with new ones. A daily light integral will be recorded from the 48 averaged measurements for a day's worth of readings and is downloadable via \u003ca href=\"https:\/\/www.apogeeinstruments.com\/ac-100-communication-cable\/\" target=\"_blank\"\u003eApogee AC-100 cable\u003c\/a\u003e.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eMADE IN THE USA - \u003c\/strong\u003eAll meters are designed, built, and calibrated at our headquarters in Logan, Utah, USA. Apogee Instruments has been creating research-grade instruments for scientists and serious growers for over 25 years. All meters are backed by our industry leading four-year warranty and supported by our world-class, US-based customer support team.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFor a limited time, when purchased on our website from inside the USA, the meter comes with a free AA-090 neoprene protective pouch and free basic shipping.\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eFor instructions on how to use the meter for underwater measurements, see this page for the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.apogeeinstruments.com\/underwater-par-measurements\/\"\u003eimmersion effect correction factor\u003c\/a\u003e or consider purchasing the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.apogeeinstruments.com\/mq-510-full-spectrum-underwater-quantum-meter\/\"\u003eMQ-510\u003c\/a\u003e.\u003c\/p\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cstrong\u003eHow is the MQ-500 different from previous Apogee quantum sensors?\u003c\/strong\u003e \u003cp\u003eThe MQ-500 is a full spectrum quantum sensor with an optimized, highly accurate spectral measurement range of 400-700 nm, which can be seen compared to our older \"original\" quantum sensor in the graph below. The improved spectral response of this new meter greatly increases the accuracy of LED measurements when compared to our previous \"original\" models.\u003c\/p\u003e \u003cimg alt=\"SQ-500 \u0026amp; SQ-100 Spectral Response\" src=\"https:\/\/cdn11.bigcommerce.com\/s-0oei9zu\/content\/images\/sq_xxx_spectral_response.jpg\" title=\"SQ-500 \u0026amp; SQ-100 Spectral Response\"\u003e \u003c\/div\u003e \u003cdiv\u003e \u003cstrong\u003eWhere is the MQ-500 used?\u003c\/strong\u003e \u003cp\u003eThe MQ-500 is used to measure incoming PPFD measurements in outdoor environments, greenhouses, growth chambers, and aquariums.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e","brand":"Apogee Instruments","offers":[{"title":"Default Title","offer_id":44135151010103,"sku":"MQ-500","price":549.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/316935ec80fa6a19a4c9d6bd4b6c87a6.jpg?v=1758067501"},{"product_id":"advanced-quantum-par-meter-micromols","title":"PHOTOBIO - Advanced Quantum PAR Meter (Micromols)","description":"\u003cp\u003eThe Phantom PHOTOBIO Advanced Quantum PAR Meter provides accurate and cost-effective measurement for any light source used in horticultural applications. The Advanced Quantum PAR meter is designed to measure PAR (Photosynthetically Active Radiation) flux in wavelengths ranging from 400 to 700nm. There is a positive proportional relationship between the number of photons absorbed in 400 to 700nm band and the rate of photosynthesis, important for maximizing crop yield. \u003cbr\u003e\u003cbr\u003eComplete with compact main unit, remote sensor, two connection cables (short-coiled \u0026amp; 12' long-straight), AAA batteries and protective carrying case. Convenience of storing up to 99 measurements for easy reference while adjusting light fixture height, dimmer setting and other environmental changes throughout each phase of growth.\u003c\/p\u003e \u003cp\u003ePhantom has a long-standing track record of providing reliable, high-performance products within the horticultrual equipment industry.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eCompact, portable meter with highly accurate remote quantum sensor \u003c\/li\u003e \u003cli\u003eSimple and easy to use operation, with storage of up to 99 readings \u003c\/li\u003e \u003cli\u003eIdeal for grow tent, greenhouse and commercial grow applications \u003c\/li\u003e \u003cli\u003eCompatible with modern sole-source and supplemental LED fixtures, high pressure sodium (HPS) DE grow lights, as well as any traditional indoor grow light source\u003c\/li\u003e \u003c\/ul\u003e","brand":"Hydrofarm","offers":[{"title":"Default Title","offer_id":44946092294455,"sku":"LGBQM2","price":210.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/21d144b328284b7ef40292f4de971e05.jpg?v=1758067475"},{"product_id":"par-meter-and-spectrometer","title":"Mammoth Lighting - Par Meter and Spectrometer","description":"\u003cp\u003eIntroducing our cutting-edge Par Meter and Spectrometer, a technological marvel crafted for precision and performance. Engineered with a high-speed CPU processor and a high-precision electronic CCD optical sensor, this device operates on the principle of long focal cross asymmetric CT spectroscopy system, delivering unparalleled accuracy and stability.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eEnjoy the savings vs others at $500+ for just Par readings!\u003c\/strong\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan\u003e* Extension wands are sold out - but an inexpensive selfie stick works very well too *\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eKey Features:\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003e1. Advanced Optical Technology:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eOptical resolution of 2nm for precise measurements.\u003c\/li\u003e \u003cli\u003eWider wavelength range ensures comprehensive analysis.\u003c\/li\u003e \u003cli\u003eStable performance under various conditions.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003e2. Electronic Shutter Technology:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMinimum integration time as low as 50us, allowing measurement of strong and weak optical signals.\u003c\/li\u003e \u003cli\u003eAdjustable integration time for versatility in signal detection.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003e3. Sleek and Portable Design:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAll-aluminum alloy precision carving for a lightweight and portable body.\u003c\/li\u003e \u003cli\u003eModern design, completely discarding the bulk of traditional models.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003e4. Open Operating System:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eUpgraded system with a more open operating system and source code.\u003c\/li\u003e \u003cli\u003eFacilitates intelligent product applications and provides space for unlimited instrument upgrades.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003e5. Intuitive User Interface:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e3.5-inch high-definition IPS capacitive touch screen for a vibrant display.\u003c\/li\u003e \u003cli\u003eHigh resolution for more content on a single screen, realistic graphics, and a smoother user experience.\u003c\/li\u003e \u003cli\u003eThoughtful interface design enhances usability.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003e6. Quick and Convenient:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eQuick on\/off functionality for swift operations.\u003c\/li\u003e \u003cli\u003eOne-click testing for seamless measurements.\u003c\/li\u003e \u003cli\u003eLarge battery capacity allows for 24 hours of extended testing time.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eWhether you're a professional researcher, scientist, or enthusiast, our Par Meter and Spectrometer redefine the standards of accuracy, convenience, and portability. Elevate your experiments and measurements with a device designed for the future of scientific exploration.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eB. Function Description:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003ePPFD PAR:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMeasures Photosynthetic Photon Flux Density for optimal plant growth.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eSpectral Distribution Map:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eProvides a detailed map of the spectral distribution for comprehensive analysis.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eRelated Color Temperature Tc (K):\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eOffers color temperature information for accurate lighting assessment.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eIlluminance E (lx):\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMeasures the level of illuminance in lux for well-lit environments.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eIrradiance Ee (W\/m):\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDetermines irradiance for a complete understanding of light intensity.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eChromaticity Coordinates (x, y):\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePresents chromaticity coordinates for precise color representation.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eRelative Spectral Power Distribution P():\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eIllustrates the relative distribution of spectral power.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eColor Rendering Index Ra, Ri (i=1-15):\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eEvaluates color rendering accuracy across a spectrum of indices.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eColor Rendering Index:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMeasures the device's ability to reproduce colors accurately.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eChromaticity Coordinate Map:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDisplays a map of chromaticity coordinates for comprehensive analysis.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eColor Tolerance Map SDCM:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eIllustrates color tolerance using Standard Deviation of Color Matching.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eMain Wavelength, Peak Wavelength, Half Width:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eProvides crucial information about the light spectrum.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eLight to Dark Visual Ratio S\/P:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eEvaluates the visual experience by assessing light-to-dark ratios.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eColor Purity, Red Ratio, Green Ratio, Blue Ratio:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAnalyzes color components to ensure accurate representation.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eCan Export Spectral Data per Nanometer:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eAllows for detailed spectral data export for in-depth analysis.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eMore Functional Parameters Can Be Customized:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eTailor the device to specific requirements with customizable parameters.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eC. Main Technical Indicators:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eModel and Name:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eM400 Spectral Color Illuminometer.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eWavelength Range:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e380nm~780nm for comprehensive spectral coverage.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eSplit Mode:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eLong focal cross asymmetric CT split beam system.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eSensor:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eHigh-precision CCD for accurate light sensing.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eSpectral Bandwidth (FWHM):\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e2nm for detailed spectral analysis.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eSpectral Resolution:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e0.2nm for high-resolution data.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003ex, Y Coordinate Value x, y Accuracy:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e+\/-0.0015 accuracy; +\/-0.0005 repeatability.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eWavelength Accuracy:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e+\/-0.5nm for precise wavelength measurements.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eWavelength Data Output Interval:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1nm; EXCEL can export data corresponding to each nanometer.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eIllumination Accuracy Level:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eLevel 1 (+\/-4% reading +\/-1 reading) for reliable results.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eColor Rendering Accuracy:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e+\/-1.5% for accurate color representation.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003ePhotosensitive Surface:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e 10mm for efficient light capture.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eScreen Type:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e3.5-inch high-definition IPS capacitive touch screen for intuitive operation.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eChromaticity Standard Accuracy:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e+\/-0.0025, traceable to NIM for reliable color temperature assessments.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eColor Temperature Range:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1000K~100000K for versatile lighting conditions.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eStray Light:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e0.3% to minimize interference.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eIlluminance Measurement Range:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e0.1Lux~2000Klux for diverse lighting environments.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eMeasurement Mode:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eSingle test\/continuous test for flexibility in testing scenarios.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003c\/ul\u003e","brand":"Mammoth Lighting","offers":[{"title":"Default Title","offer_id":49587944587575,"sku":"MLPARMETER","price":479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/344815679ede173507787a8662cb03b2.jpg?v=1758067532"},{"product_id":"apogee-instruments-mq-500-l-5-full-spectrum-quantum-meter-5-m-lead","title":"Apogee Instruments - MQ-500-L-5: Full-Spectrum Quantum Meter (5 m Lead)","description":"\u003cp\u003eThe 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. 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The separate sensor is IP68 waterproof and reads 0 to 4000 umol m-2 s-1.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFull-spectrum PPFD, 400 to 700 nm; range 0 to 4000 umol m-2 s-1\u003c\/li\u003e\n\u003cli\u003eCalibration uncertainty +\/- 5 percent; drift less than 2 percent per year\u003c\/li\u003e\n\u003cli\u003eIP68 waterproof sensor on a 5 m lead\u003c\/li\u003e\n\u003cli\u003eReal-time readout with sample logging and DLI\u003c\/li\u003e\n\u003cli\u003eBuilt and calibrated in Logan, Utah; NIST-traceable, made in the USA, and backed by an industry-leading 4-year warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose This Model\u003c\/h3\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCanopy PPFD spot checks and light mapping\u003c\/li\u003e\n\u003cli\u003eFixture commissioning and uniformity checks\u003c\/li\u003e\n\u003cli\u003eGreenhouse and indoor cultivation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Apogee Instruments","offers":[{"title":"Default Title","offer_id":52353982988599,"sku":"MQ-500-L-5","price":564.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/316935ec80fa6a19a4c9d6bd4b6c87a6_af169455-1f6e-4ae3-82d5-35d29b4711e5.jpg?v=1780690431"},{"product_id":"apogee-instruments-mq-610-epar-quantum-meter-400-750-nm","title":"Apogee Instruments - MQ-610: ePAR Quantum Meter (400-750 nm)","description":"\u003cp\u003eThe Apogee MQ-610 is a handheld ePAR quantum meter that measures the extended 400 to 750 nm photosynthetic range, capturing far-red photons accurate under all light sources, including narrow-band and broad-spectrum LEDs.\u003c\/p\u003e\u003cp\u003eThe meter displays real-time intensity, logs samples, and computes daily light integral (DLI), with a separate sensor on a 2 m lead for easy canopy placement.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eExtended ePAR measurement, 400 to 750 nm\u003c\/li\u003e\n\u003cli\u003eReal-time readout with sample logging and DLI\u003c\/li\u003e\n\u003cli\u003eAccurate under sunlight, HPS, and LED fixtures\u003c\/li\u003e\n\u003cli\u003eSeparate waterproof sensor on a 2 m lead\u003c\/li\u003e\n\u003cli\u003eBuilt and calibrated in Logan, Utah; NIST-traceable, made in the USA, and backed by an industry-leading 4-year warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose This Model\u003c\/h3\u003e\u003cp\u003eThe MQ-610 lets growers measure the same extended ePAR range used in modern photobiology research in a simple handheld meter.\u003c\/p\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eePAR spot checks under LED fixtures\u003c\/li\u003e\n\u003cli\u003eFar-red-inclusive light measurement\u003c\/li\u003e\n\u003cli\u003eGreenhouse and indoor cultivation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Apogee Instruments","offers":[{"title":"Default Title","offer_id":52353983283511,"sku":"MQ-610","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/sq-620-meter.jpg?v=1780690597"},{"product_id":"apogee-instruments-mq-350-par-bar-with-handheld-meter","title":"Apogee Instruments - MQ-350: PAR Bar with Handheld Meter","description":"\u003cp\u003eThe Apogee MQ-350 is a line-quantum PAR bar with a handheld meter that averages PPFD across ten quantum sensors, giving a true spatial-average canopy light reading instead of a single point.\u003c\/p\u003e\u003cp\u003eSpatial averaging is the right way to characterize light uniformity over a bench or canopy, where single-point meters can mislead. The bar reports average PPFD and supports DLI logging.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTen quantum sensors averaged into one spatial reading\u003c\/li\u003e\n\u003cli\u003eHandheld meter with sample logging and DLI\u003c\/li\u003e\n\u003cli\u003eIdeal for canopy uniformity and bench mapping\u003c\/li\u003e\n\u003cli\u003eRugged bar for repeated field use\u003c\/li\u003e\n\u003cli\u003eBuilt and calibrated in Logan, Utah; NIST-traceable, made in the USA, and backed by an industry-leading 4-year warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose This Model\u003c\/h3\u003e\u003cp\u003eThe MQ-350 measures what a single-point meter cannot: the average light a whole canopy actually receives.\u003c\/p\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCanopy light-uniformity mapping\u003c\/li\u003e\n\u003cli\u003eBench and rack PPFD averaging\u003c\/li\u003e\n\u003cli\u003eFixture layout and commissioning\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Apogee Instruments","offers":[{"title":"Default Title","offer_id":52354478440759,"sku":"MQ-350","price":739.0,"currency_code":"USD","in_stock":true}]},{"product_id":"apogee-instruments-dli-photoperiod-meter","title":"Apogee Instruments - DLI \u0026 Photoperiod Meter","description":"\u003cp\u003eThe Apogee DLI meter spot-checks light intensity and automatically records daily light integral (DLI) and photoperiod, accurate under all light sources including LEDs.\u003c\/p\u003e\u003cp\u003eChoose the full-spectrum model for PAR (400-700 nm) or the ePAR model for the extended 400-750 nm range that captures far-red.\u003c\/p\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFull-Spectrum PAR, 400-700 nm (DLI-500)\u003c\/li\u003e\n\u003cli\u003eePAR, 400-750 nm including far-red (DLI-600)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAutomatic DLI and photoperiod recording\u003c\/li\u003e\n\u003cli\u003eAccurate under sunlight, HPS, and LEDs\u003c\/li\u003e\n\u003cli\u003eIP65 rugged, handheld, simple operation\u003c\/li\u003e\n\u003cli\u003eMade in the USA and backed by Apogee's industry-leading warranty and support.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCanopy light and DLI spot checks\u003c\/li\u003e\n\u003cli\u003ePhotoperiod verification\u003c\/li\u003e\n\u003cli\u003eGreenhouse and indoor cultivation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Apogee Instruments","offers":[{"title":"Full-Spectrum (400-700nm)","offer_id":52354911437111,"sku":"DLI-500","price":499.0,"currency_code":"USD","in_stock":true},{"title":"ePAR (400-750nm)","offer_id":52354911469879,"sku":"DLI-600","price":529.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/DLI-500-product__12981.1643217673_c49ca741-4858-482e-9a46-da1dd3defb41.jpg?v=1780695439"}],"url":"https:\/\/www.blacklabelsupply.io\/collections\/par-light-meters.oembed","provider":"BLACK LABEL","version":"1.0","type":"link"}