To ensure these bulbs are appropriate for desert reptiles they provide a full dosage of UVB (50 microwatts per second/cm2) along with essential UVA light, plus visible-spectrum illumination that makes skin coloration more vivid and viewable. While we do not test for Color rendering index (CRI), I suspect their CRI value would also be high (above 80) as the high levels of phosphor used to provide the UVB value would also drive up the CRI index. While these lights do look great, our lighting quality tests are designed to evaluate the animal's needs more so than aesthetics, so we simply do not test for CRI.
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