Red Light Testing Methods - Spectrometer, EMF Meter & More
Channel: Red Light Therapy by Alex Fergus 
Date: 04/10/2021

Welcome to my red light therapy reviews testing method video. In this video, I explain what equipment I use for testing and how I do what I do in many of these review videos. First off, here are the links to my previous deep-dive review videos:

Red Light Rising Advantage 1500: https://aferg.co/YT-adv-1500
MIto Red MitoPRO 1500: https://aferg.co/MitoPRO-full-review
LightpathLED Large Multiwave Pulsed: https://aferg.co/lightpathled-fullreview

Here's are the tests I include in every review and the thought pattern behind them:

✅ "Wavelength output": the output that companies claim is emitted by a panel is not always the same that I measure. I use my $3,000+ USD spectrometer for this test.
✅ "Peak power output" (irradiance) is also tested with the same spectrometer. I test this panel from a 6-inch distance. Here I take 3 readings: 1) peak power red light; 2) peak power near-infrared (NIR) light and; 3) combined red and NIR irradiance. I move around the panel so I get the highest reading possible. All power output readings below are measured in mW/cm2.
✅ Peak power output is flawed as a reading because manufacturers can use stronger LEDs in one part of the power at one part of the panel, OR use beam angles to concentrate power. That's why there's another reading I've included:
✅ The "average combined irradiance" (power output), also tested with the spectrometer, gives you a better indication of the power output across nine points of the panel. Six readings are on the edges of the panel, an inch in, and three across the middle. I activate both red and NIR light for this reading
✅ The "total power output" is calculcated by taking the average of the previous nine readings, and the size of the panel, and multiplying the size by the average wattage of the nine readings. The "total power output" gives you an indication how much therapeutic light is emitted by one panel.
✅ "Cost or price per Watt" gives you an indication how much you pay per unit of power output. "Cost or price per LED" tells you how much you're paying for every single LED on the panel. Both readings are expressed in USD. Cheaper prices are better here. I always use discount code ALEX for these readings.
✅ The "Wattage draw" test tells you how much power is consumed while either red or NIR or both are activated. A higher Wattage draw generally indicates that more light is emitted by a panel. The wattage draw reading is imperfect because power goes to the fans, the control panel, the circuit, so the reading is imperfect and only gives an indication!
✅ "Hotspot testing" tells you whether the light is evenly distributed across your body when using the panel.
✅ With my Cornet "EMF" (Electro-Magnetic Frequencies) meter I test for radiowaves, magnetic fields, and electric fields. I use building biology standards for my cutoff points for safe, unsafe, and dangerous exposure levels. Magnetic fields are the most important here.
✅ With the Decibel meter I measure noise pollution. Some people are sensitive to noise and like to have their exposure low
✅ With the spectromter I test for flicker rate in Hz and the % for the amplitude. Read about flicker here: https://aferg.co/flicker


✅ If you're interested in the spectrometer I use, check this product: https://aferg.co/spectrometer
✅For my EMF meter, consider: https://aferg.co/cornet

If you'd like to learn more about red light therapy, such as different reviews and my buyer's guide or Excel sheet, consider:

✅ For my Red Light Deals, Discounts and Resources head to - https://aferg.co/red-light-deals
✅ My epic Facebook group on red light therapy and more: https://aferg.co/fb-group
✅ Then, check this link for my red light therapy buyer's guide, first up, the YT video: https://aferg.co/YT-RLT-Buyers 
✅ And lastly,, there's the blog post which contains the Excel sheet as well: https://aferg.co/RLTguide


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PRODUCTS TEAM ALEXFERGUS HIGHLY RECOMMENDS AND/OR USES:

- Swannies Blue Light Blocking Glasses (use code ALEXFERGUS to save) - https://aferg.co/swanw9f24f
- Qualia Nootropic (use code FERGUS to save) - http://bit.ly/2Fr4AB8 
- Sun Stream Sauna - (mention my name for a free gift and a discount ) https://aferg.co/sun

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PS. Find Me
- My website - https://www.alexfergus.com/

00:00 Intro
01:23 Wavelength Testing
03:26 Power/Irradiance Testing
05:27 Peak Power Readings
07:00 Average Irradiance
10:09 Total Power Calculations
11:20 Value Readings
12:46 Wattage Draw
13:50 Hotspot Testing
16:09 EMF & Sound Levels
19:02 Flicker & Pulse
21:30 Thoughts & Feedback