Siemens LP4135 / Ideal Horizons 41003 Equivalent Replacement UV Lamp

Part Number:
Lamp Category:
Ready to Ship - In Stock Ready to Ship - In Stock


Watts: 14 Watts
Length: 287 mm
Base: B16
Base Description: 4 Pin Single Ended (B16)
Qtz. OD: 15 mm
Wiring: Preheat
Output: Standard
Category: Preheat
Type: Ozone Producing
Wires: 2
Description: GPH287T5VH/4
Note: Color of Lamp Base has no bearing on operation or use, and should not be considered when determining lamp needed.

This lamp is an equivalent replacement lamp for the following:

Brand Model
Aqua Azul 3-6, L-1-915
Barnstead EW-99275-70, LMX13-UV
Elga LabWater LC170, Purelab Flex 2, Purelab Flex 3, Purelab Flex 4
Evoqua Water Technologies LF2 (TOC Reduction Applications), W2T852826
Ideal Horizons 41003, LMP41003
LabStrong Corporation LMP13
Lancaster Pump & Water Treatment LBR-4
Siemens / Sunlight LP4135
Thermo Fischer Scientific LMX13
Ultra Dynamics 7001-915, P1, S2
UV Doctor 1111VH, UVDRX-1111VH
UV Superstore G8-9150
Wedeco 41003, LMP41003

Disclaimer: This is an Atlantic Ultraviolet Corporation® STER-L-RAY® brand lamp. It can be used as an equivalent replacement lamp for other brands.

Our STER-L-RAY ® brand of Germicidal Ultraviolet Lamps can be used as equivalent replacement lamps for over 250 equipment brands and 5,000 models of ultraviolet equipment besides Atlantic Ultraviolet’s Air and Water Purifiers.

Can’t find lamp you are looking for? Each of our UV Application Specialists has access to an extensive cross referencing interface. Call us directly at 1-631-273-0500, Monday through Friday, 7am–6pm EST, email us at

Shipping Info

Items marked "Ready to Ship - In Stock" are ready to ship and will do so promptly. Items marked "Varied Ship Date - Contact Us" are in production, and the ship date varies. Please place order & contact us for ship date.


Part Category:
Base Category (Pins per End):
4 Pin Base
Cross Reference Brands A:
Aqua Azul 3-6, Aqua Azul L-1-915
Cross Reference Brands B to F:
Barnstead Thermo Fischer Scientific LMX13, ELGA LabWater LC210, ELGA LabWater Purelab Flex 2, ELGA LabWater Purelab Flex 3, ELGA LabWater Purelab Flex 4
Cross Reference Brands G to O:
LabStrong LMP13, Lancaster Pump 3-6, Lancaster Pump LBR-4
Cross Reference Brands P to S:
Siemens LP4135, Sunlight LP4135
Cross Reference Brands T to Z:
Ultra Dynamics P1, Ultra Dynamics S2, Ultradynamics P1, Ultra Dynamics 7001-915
Lamp Length:
0 - 12 in. (0 - 305mm)
Ozone Producing:
Part Type Equipment Brand Model / Part #
Lamp Aqua Azul Corporation 3-6
Lamp Aqua Azul Corporation L-1-915
Lamp Barnstead EW-99275-70
Lamp Barnstead LMX13-UV
Lamp ELGA LabWater LC210
Lamp ELGA LabWater Purelab Flex 2
Lamp ELGA LabWater Purelab Flex 3
Lamp ELGA LabWater Purelab Flex 4
Lamp Evoqua Water Technologies LLC LF2 - TOC Reduction
Lamp Evoqua Water Technologies LLC W2T852826
Lamp Ideal Horizons 41003
Lamp Ideal Horizons LMP41003
Lamp LabStrong Corporation LMP13
Lamp Lancaster Pump & Water Treatment LBR-4
Lamp Siemens LP4135
Lamp Ster-L-Ray 05-1120-R
Lamp Sunlight LP4135
Lamp Thermo Fisher Scientific EW-99275-70
Lamp Thermo Fisher Scientific LMX13
Lamp Ultra Dynamics 7001-915
Lamp Ultra Dynamics P1
Lamp Ultra Dynamics S2
Lamp UV Doctor 1111VH
Lamp UV Doctor UVDRX-1111VH
Lamp UV Superstore, Inc. G8-9150
Lamp Wedeco UV Technologies, Inc. 41003
Lamp Wedeco UV Technologies, Inc. LMP41003