In a shop that’s constantly dusty, a UVC germicidal lamp doesn’t earn its keep on nameplate output alone. It earns it by holding that output steady, day after day. Dust on reflectors and quartz sleeves kills irradiance fast. And once the optics are dirty, thermal drift tends to follow. We built our fully enclosed reflector UV lamp for exactly this environment—so the optical path stays clean and the thermal envelope stays predictable. What actually matters under the hood We run a far-UVC source built for industrial duty, with a controlled 222 nm output profile. It’s tuned to hit microbes hard while keeping exposure risk low in areas near people. The reflector isn’t an open trough. It’s a sealed, high-purity aluminum assembly with a dichroic-coated geometry that holds peak irradiance across the target plane. The enclosure keeps particulates out, so reflectance stays high and lamp temperature stays stable. In practice, that means germicidal fluence stays consistent. You don’t get a collapsing curve as dust builds up. Why it holds up in dirty cells In high-dust setups, failure usually shows up in two ways: reflector fouling and thermal behavior that gets messy. The sealed reflector keeps the mirror surface clean, so you keep the designed spot size and energy density. At the same time, the thermal design holds the required junction temperature, so output stays stable instead of sagging when the lamp starts to run hot. The payoff is repeatable, cycle-to-cycle performance—especially where you can’t afford downtime just to wipe optics. A few shop-floor notes Installation tolerance is tighter than it is with open reflectors. The sealed optical path needs proper alignment, and you need clearance for airflow to avoid local hot spots. Also, confirm your power supply can handle the lamp’s warm-up behavior. Far-UVC sources can have a defined ramp that’s different from conventional low-pressure systems. Match the lamp to the chamber geometry, and the output stays repeatable.