SOX 90W Low Pressure Sodium Lamp 589nm BY22D Replaces Philips/SLI SOX 90W For Sale

The classic 90W SOX lamp — a pure 589nm low-pressure sodium light source trusted for scientific, engineering, and creative applications. With its uniquely monochromatic output, this lamp remains one of the most efficient and visually striking light sources ever made.As the most powerful lamp in the SOX range, the 90W model delivers maximum brightness and coverage for large-scale applications. It is ideal for universities, laboratories, museums, science centers, physics demonstrations, black-fire experiments, optical research, and educational environments where a high-output monochromatic light source is required.Historically used to illuminate roads, highways, and public spaces around the world, the 90W SOX lamp represents the iconic scale and performance that made low-pressure sodium lighting legendary.Beyond scientific use, the 90W model is favored for immersive art installations, galleries, large photography and film productions, theatrical environments, experiential events, creator studios, and other projects where its dramatic monochromatic effect can transform entire rooms and large spaces.In stock in the USA and ready to ship worldwide. Each lamp is carefully inspected and packaged before shipment to help ensure safe delivery.Note: Requires a dedicated SOX ballast to operate. Please see our Ballast Collection for compatible control gear.Product Code: LPS90WSOX 90W Low Pressure Sodium Lamp 589nm BY22D Replaces Philips/SLI SOX 90WDescription:SOX 90W Low Pressure Sodium Lamp 589nm BY22D — Replaces Philips/SLI SOX 90WBrand new, fully tested. Compatible replacement for Philips SOX, SLI SOX, and other standard 90W low-pressure sodium lamps using the BY22D base. The most powerful lamp in the SOX range — built for large-scale spaces and high-output applications. Ships from our U.S. warehouse.Product Code: LPS90WCompatibility Base: BY22D Fits standard SOX 90W fixtures and ballasts Cross-references: Philips SOX 90W, SLI SOX 90W Requires a dedicated SOX ballast — will not run on standard sockets. Check our store for compatible ballasts.Electrical specs Wattage (Nominal): 90W Wattage (Rated): 91W Lamp Current (EM, Nom): 0.82A Voltage (Nom): 112V Energy Efficiency Class: A++Light output Wavelength: 589nm (monochromatic) Luminous Flux: 13,600 lm Luminance: 10 cd/cm² Luminous Efficacy: 150 lm/WLifespan Average: 12,000 hrs 8% Failure: 6,000 hrs 30% Failure: 8,000 hrs 50% Failure: 12,000 hrsTemperature limits Max Outer Bulb Temp: 150°C / 302°F Max Base Edge Temp: 150°C / 302°FDimensions Max Diameter: 66mm / 2.60 in Max Length: 525mm / 20.67 in Operating Position: H110 (Hanging ±110° or Base Up)Certifications: UKCA, RoHS, CEAlso used for Museums, galleries, science centers, university demonstrations, large-scale photography and film productions, immersive installations, and other high-output monochromatic-light applications for large spaces.Shipping & returns Ships from U.S. warehouse, carefully inspected and packaged Free shipping to U.S. & Canada 30-day returns (free for U.S. buyers; international buyers cover return shipping) Tracking included International buyers: import duties/taxes are buyer's responsibility, not included in priceWarranty 1-year limited warranty against manufacturing defects.FAQQ: Is this new or used?A: New, manufactured and tested before shipment.Q: How do I confirm fit with my fixture?A: Match wattage and base type (BY22D) to your current lamp. Send us a photo if unsure.Q: Will replacement lamps be available later if I need another?A: Yes — we maintain ongoing stock direct from the manufacturer. SOX 90W Low Pressure Sodium Lamp 589nm BY22D Replaces Philips/SLI SOX 90W Description:SOX 90W Low Pressure Sodium Lamp 589nm BY22D — Replaces Philips/SLI SOX 90WBrand new, fully tested. Compatible replacement for Philips SOX, SLI SOX, and other standard 90W low-pressure sodium lamps using the BY22D base. The most powerful lamp in the SOX range — built for large-scale spaces and high-output applications. Ships from our U.S. warehouse.
Product Code: LPS90W
Compatibility
Base: BY22D
Fits standard SOX 90W fixtures and ballasts
Cross-references: Philips SOX 90W, SLI SOX 90W
Requires a dedicated SOX ballast — will not run on standard sockets. Check our store for compatible ballasts.
Electrical specs
Wattage (Nominal): 90W
Wattage (Rated): 91W
Lamp Current (EM, Nom): 0.82A
Voltage (Nom): 112V
Energy Efficiency Class: A++
Light output
Wavelength: 589nm (monochromatic)
Luminous Flux: 13,600 lm
Luminance: 10 cd/cm²
Luminous Efficacy: 150 lm/W
Lifespan
Average: 12,000 hrs
8% Failure: 6,000 hrs
30% Failure: 8,000 hrs
50% Failure: 12,000 hrs
Temperature limits
Max Outer Bulb Temp: 150°C / 302°F
Max Base Edge Temp: 150°C / 302°F
Dimensions
Max Diameter: 66mm / 2.60 in
Max Length: 525mm / 20.67 in
Operating Position: H110 (Hanging ±110° or Base Up)Certifications: UKCA, RoHS, CE
Also uséd for
Museums, galleries, science centers, university demonstrations, large-scale photography and film productions, immersive installations, and other high-output monochromatic-light applications for large spaces.
Shipping & returns
Ships from U.S. warehouse, carefully inspected and packaged
Free shipping to U.S. & Canada
30-day returns (free for U.S. buyers; international buyers cover return shipping)
Tracking included
International buyers: import duties/taxes are buyer's responsibility, not included in price
Warranty
1-year limited warranty against manufacturing defects.
FAQQ: Is this new or uséd?
A: New, manufactured and tested before shipment.
Q: How do I confirm fit with my fixture?
A: Match wattage and base type (BY22D) to your current lamp. Send us a photo if unsure.
Q: Will replacement lamps be available later if I need another?
A: Yes — we maintain ongoing stock direct from the manufacturer. Buy now and save! You might also like SOX-E 18W Low Pressure Sodium Lamp 589nm BY22D Replaces Philips/SLI SOX 18W SOX 35W Electronic Ballast — Low Pressure Sodium Lamp Control Gear SOX-E 36W Electronic Ballast — Low Pressure Sodium Lamp Control Gear SOX 135W-180W Electronic Ballast — Low Pressure Sodium Lamp Control Gear integration by