About EMR-TEK
Founded by someone who lived it
Kris Sweeting was diagnosed with vitiligo at age 3. By 5, he was in UVA phototherapy. At 9, with the condition spreading and conventional treatment failing, his family took him from Canada to Germany to consult Dr. Karin Schallreuter at the Institute for Pigmentary Disorders — the researcher who pioneered the pseudocatalase + narrowband UVB protocol, delivered through Philips 311nm bulbs. He ran it daily at home: topical first, then light. Near-complete repigmentation, with only a few spots remaining on his hands and feet.
By 14, he was printing PubMed studies in his basement. By 18, he was self-studying photobiomodulation, endocrinology, and circadian biology. Eight years building EMR-TEK — every device used on himself first, every protocol run personally.
That experience left him with one conviction: in light therapy, the hardware is everything — the wavelengths, the output, the components. So he built EMR-TEK around a simple promise: publish everything he'd learned to check, so anyone could verify it for themselves.
Individual results vary. EMR-TEK devices are general-wellness products, not medical devices.
Why EMR-TEK
What's inside the devices and how you can check it.
Before building the first EMR-TEK device, Kris looked at a lot of hardware — and came away with a simple standard: every spec on the page should be one you can verify. Here's ours.
COB at the core. Standard LED arrays spread individual diodes across a board — light scatters between housings, and irradiance falls off fast with distance. EMR-TEK devices are built around COB (Chip-on-Board): multiple diodes bonded to a single emitter, concentrated and directed. The result is output that holds at the distances people actually sit. You don't have to take our word for it: Light Labs International, an independent lab, measured our 200W COB at 138.39 mW/cm² at 6 inches and 67.22 mW/cm² at 12 inches, and the full report is published on our testing page. On our product pages, Robert Hunt, author of The Blue Light Diet, measures most of our devices on camera with his own spectrometer.
Components from the companies that do it best. Our PRO series and every Krypton run Mean Well® industrial-grade drivers — the standard used in medical and industrial equipment — bringing flicker to 0% with no detectable magnetic field. Our standard devices run our long-serving driver design, independently measured at 3.2% flicker — and we publish that number instead of rounding it to zero, because that's the whole point of this company. Our Krypton UV systems run genuine Philips tubes, including 311nm narrowband UVB — the most widely used bulbs in clinical phototherapy, and the same bulbs Kris grew up under — driven by electronic ballasts that cut the flicker fluorescent tubes otherwise produce. We could make cheaper versions of any of these components ourselves. We don't.
Engineering that didn't exist before. The Firefly's battery — two years in development to drive a COB chip without a wall outlet — is patent-pending. We build things that didn't exist before, and we file the paperwork to prove it.
Verified, not asserted. Independent lab measurement. On-camera spectrometer readings. Published flicker numbers for every model — including the ones that aren't zero. Exact wavelength peaks on every product page. If we haven't measured something, we say so.
Who's using it.
Practitioners who check specs for a living. People managing their health who've been burned by wellness marketing before. Families, athletes, and researchers in countries all over the world. We've never hired a PR agency — the people talking about these devices found them the way they found you, used them, and said what they thought. Some of them you'd recognize: there's a video on our homepage of Chris Bumstead, six-time Classic Physique Mr. Olympia champion, talking about our devices in his own words, on camera. We'd rather earn that than manufacture it.