No More Mercury
The February 2027 phase-out of mercury and metal halide lamps has been on the horizon for a while now. Some labs are aware it’s coming, some less so. Many have even made a mental note to “look into it at some point”, which is the professional equivalent of putting something in a drawer labelled Important but not urgent.
But there’s one question that rarely gets asked:
How long will your current bulb stock actually last?
Because while February 2027 still feels comfortably distant, lamp stock doesn’t disappear dramatically. There’s no announcement. No ceremony. It simply diminishes quietly, experiment by experiment, replacement by replacement, until one day you open the cupboard and realise it looks a bit… empty.
The slow fade that nobody tracks…
Very few facilities actively and accurately track their mercury or metal halide bulb usage over time. It’s understandable. Lamps are consumables. They get ordered, installed, replaced, and eventually forgotten about.
But this creates a blind spot.
A lab might believe it has “plenty left”, when in reality the remaining stock only covers a few months of typical usage. Another facility might assume they’re safe because they recently ordered bulbs, without considering that procurement availability will tighten as the phase-out approaches.
Why this matters sooner than you think
The phase-out date itself isn’t the only factor.
There are other variables quietly influencing how long your stock will last:
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How many systems still rely on mercury or metal halide illumination
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Typical lamp lifetime in your workflows
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Actual usage patterns versus assumed usage
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Whether spare bulbs are shared across departments
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Procurement lead times as availability decreases
Taken together, these can shift your “comfortable buffer” far more than expected.
A facility that feels well covered today may find itself planning a transition much sooner than anticipated.
An easier way to find out
Rather than guessing, estimating, or opening cupboards for a quick visual audit, you can simply calculate it.
We’ve created a straightforward online tool that helps you estimate how long your current bulb stock is likely to last, based on your facility’s real usage patterns.
It takes a few inputs, produces a clear answer, and gives you something far more useful than a vague sense of reassurance.
Sometimes confirmation is all you need.
Sometimes it’s the prompt that makes planning easier.
Either outcome is helpful.
