Larson 9 W Germicidal Lamp (G23, 254 nm)
Twin-tube G23 germicidal lamp
Key capabilities
- Replacement lamp (external ballast)
- Conventional (discharge)
- Germicidal
- Air, Water, Surface treatment
About this product
Data transparency
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Implied UV efficiency 26.7% (UV output ÷ nominal power) — within the physical range for this lamp type.
- measurement distance/sensor not stated
Plan with Simulex
Not sure how many lamps you need?
Model your UV-C disinfection setup first — required dose (D₉₀), lamp count, irradiance and coverage for your air, water or surface application. Free and vendor-neutral.
Compatible ballasts & cables
This is a bare replacement lamp — it needs external control gear. Matched by G23 socket and wattage.
Compare with similar items
Same technology world and application — the specs that actually drive the buying decision, side by side.
| Spec | This item  Larson 9 W Germicidal Lamp (G23, 254 nm) Larson Electronics $141 40% specced You are here | Viqua Sterilight S740RL-HO Replacement UV-C Lamp VIQUA (Trojan Technologies Group ULC) $193 20% specced View → |  Ushio G64T5L 65W Single-Pin Germicidal UV-C T5 Ushio Inc. $88 23% specced View → |  Sankyo Denki G15T8 15W G13 Germicidal UV-C Sankyo Denki Co., Ltd. €18 27% specced View → |
|---|---|---|---|---|
| Peak wavelength | 254 nm | 254 nm | 254 nm | 254 nm |
| Technology | Conventional (discharge) | Conventional (discharge) | Conventional (discharge) | Conventional (discharge) |
| Product form | Replacement lamp (external ballast) | Replacement lamp (external ballast) | Replacement lamp (external ballast) | Replacement lamp (external ballast) |
| Treatment media | Air, Water, Surface | — | — | — |
| UV-C output (254 nm) | 2.4 W | — | 25 W | 4.9 W |
| Lamp wattage (nominal) | 9 W | 80 W | 65 W | 15 W |
| Lifetime | 8,000 h | 9,000 h | — | 8,000 h |
| Socket / base | G23 | — | Single-Pin (Fa8) | G13 |
| Dimensions (L × W × H) | 14.5 × 2.79 × 2.79 cm | — | — | — |
| Ballast required | Yes | — | — | — |
Specifications as listed by each manufacturer or public source — LUVEX does not rank products. A blank cell means that figure has not been provided yet. Verified listings and active partners are shown first; the table itself stays neutral.
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