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They don't really have a set design that make them set out from regular lightbulbs. Sometimes it will say on the lightbulb itself. The UVA bulbs I are smaller, longer, and have a narrow end that mushrooms out. More like a tes-tube then a typical lightbulb. It also has a frosted coloring around the sides to aim the rays of light directly down. My UVB bulbs are large and coiled.

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15y ago
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AnswerBot

6mo ago

A UVA bulb typically looks like a regular light bulb with a black or dark purple coating on the outside to filter out visible light and emit ultraviolet A (UVA) light. It often has a screw or pin base for easy installation in light fixtures.

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Q: What does a uva bulb look like?
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