The Osram HQL 125W MBF-U Mercury Lamp delivers consistent, high-output performance for large spaces where brightness and reliability are essential. Built with an E27 Edison Screw cap and MBF-U high-pressure mercury technology, this bulb provides a crisp white light that ensures excellent visibility across open areas. Commonly used in street lighting, warehouse fixtures, car parks, and public spaces, it offers a robust lighting solution for demanding commercial and industrial applications.
Designed by one of the most recognised names in lighting, this Osram 125W mercury bulb is engineered for longevity and dependability. Its high-pressure discharge system ensures reduced maintenance and long operational life, cutting down replacement costs and time. The MBF-U lamp design combines mercury vapour with phosphor coating, delivering better colour rendering and energy efficiency than older lamp types, making it a smart upgrade for outdated lighting installations.
With its E27 ES base, the Osram HQL 125W lamp integrates smoothly into standard fittings, reducing the need for costly fixture changes. Whether you’re upgrading external lamps or installing new lighting in a commercial or municipal setting, this lamp offers a practical, budget-conscious option. Its durable glass envelope and well-balanced light distribution make it ideal for outdoor fixtures, signage, and perimeter lighting in tough environments.
Almost all orders placed before 1.00pm (Monday-Friday) will be despatched the same day, (providing we have the items in stock).
We offer the following delivery options:
For orders under £50, please see the following delivery tariffs. Please note that some delivery locations / times (see below) will incur additional charges.
We are also able to offer the following timed deliveries.
Delivery Locations Incurring Extra Charges for signed for deliveries.
The following locations will incur additional charges if you select a signed for delivery (or for large items which require delivery by courier):
If you have any specific delivery requirements, call our sales team on 01793 863409.
Our aim is to provide you with the highest levels of service possible and this extends to our flexible and customer-friendly policies.
Please do not return any items to Heathfield LED without first contacting us by phone or email.
phone: 01793 863409 (9am to 5pm Monday to Friday)
email : returns@heathfieldled.co.uk
If you wish to return goods for any reason please supply the following information:-
We will do everything possible to comply with reasonable requests for returns and will issue any refund due to you as promptly as possible.
If you have any concerns or questions please call or e-mail us!
What doesn’t our warranty cover?
In any instance where your bulb has developed a fault, we will do our utmost to replace it or offer a full refund (provided the item is still within its stated warranty period). However, if it becomes apparent that the product has been misused, tampered with or modified in any way, we will view this as having voided its warranty.
‘Misuse” includes, but is not limited to, incorrect operation by the user, use of non-dimmable bulbs on a dimmable circuit or connection to or operation with an unsuitable power supply. ‘Tampering’ or ‘modification’ can be interpreted as any activity designed to alter the product in such a way that it can be used in a manner that wasn’t intended by its original design. This can include rewiring, removing plugs, home repairs or changing components. Unfortunately, we won’t be able to replace any item that has undergone any such process.
Read our latest reviews. We're proud of the great comments from our past customers. All verified by Reviews.io