Custom OEM PL-S7W G23 Base UV Sterilization Light - 47V 175mA for Aquarium & Drinking Water Treatment

What really sets this apart is the 253.7nm peak — it's right in the sweet spot for dimerizing thymine bases in microbial DNA, which is what makes it so effective for sterilization, and we've seen consistent results across both water and air appliction over the years.

The 47V and 175mA are tighter tolerances than most off-the-shelf lamps, so you're getting stable arc discharge that holds UV output at roughly 20uw/cm2 @ 254nm, and the H-shape with a G23 base makes it a direct drop-in for existing fixtures — just check your ballast compatiblity, because some older units might need a tweak.

You'll usually get about 9000 hours of usable life from the standard build, but we've been offering a 13000-hour option with a different cathode coating that handles cycling better — it costs a bit more, but for continuous-run setups like aquariums, it's worth it.

Storage is pretty straightforward — keep it in its sleeve away form direct sunlight, ideally under 30°C, and the glass has a protective coating that keeps the UV output damping under 15% over the lamp's life, which is better than reagent grade for this application.

Also, one thing buyers don't always think about: the 13mm tube diameter means it fits standerd quartz sleeves, but if you're retrofitting, measure the old one first — I've seen mismatches where the sleeve ID was just a hair too tight (usually 2-4 weeks lead time for custom sleeves).

We don't recommend running these in free air without a housing — the UV-C can degrade soft plastics and cause eye irritation in exposed spaces, so it's really meant for enclosed or semi-enclosed systems like tank lids or inline sterilizers.