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Brand vs Brand, on the Published Facts
Every comparison below runs the same protocol: published policies side by side, flagship panels spec by spec, and a verdict limited to what the data supports. Cells marked n/p mean the brand does not publish that fact. 34 pairings across 16 brands.
Looking for a pairing that is not here? Every brand page under the brand database carries the same spec fields, and the panel database filters all models by brand, wavelength and price.
Looking for the whole field rather than a single matchup? The brand landscape guide puts all 41 tracked brands in one table, including which ones label their irradiance measurement method and which do not.
Research and tools
Claimed vs measured irradiance44 panels, brand claim against spectrometer readingSpectrometer vs solar meterwhy the same panel gets two different numbersWavelength guide630 to 1064nm, what each band is used forLED chip designsingle vs dual chip, watt ratings, what mattersFDA cleared vs registeredwhat the labels on panel listings meanDose calculatorturn irradiance and distance into session minutesEvidence by conditiongraded reviews with PubMed citationsGuideshow often, how far, eye protection and moreScience explainersevery science article on the siteMethodologyhow specs are verified and rankings computed