Eurolux Mercury Vapour Opal Elliptic E40 Fluorescent Globe — 250W Cool White 4100K 12500lm, Bulb G103

The Eurolux G103 is a 250W ellipitcal fluorescent tube. Output is 12500 lumens of cool white light.

Key features

• 250W draw — low running cost for the light it gives
• 12500 lumens of usable light output
• 4100K cool white — a consistent tone across every fitting in the room
• CRI 40 — colours stay true under it
• 10 000 hours rated life — years of use before it needs replacing

Light quality

Cool white is a crisp, neutral tone. It keeps whites looking genuinely white, which is why it suits kitchens, bathrooms and work areas. This one puts out 12500 lumens. That is a high output aimed at large rooms, workshops and outdoor areas. A CRI of 40 describes how faithfully colours appear under the light — the higher the figure, the more natural fabrics, food and skin tones look.