No More Mercury FAQs

No. Existing lamps and systems can still be used. The change is about the supply of new mercury lamps, not about forcing existing systems to stop operating.

Not in the sense of use. From February 2027, new mercury-containing lamps will no longer be allowed to be placed on the EU market because the RoHS exemption expires. That means they cannot be manufactured, imported, or sold as new products in the EU.

The 2027 deadline is specific to the EU and UK RoHS frameworks. Other regions have different regulations. However, once major markets stop accepting mercury lamps, global manufacturing and supply are affected.

Yes, in terms of supply. Research labs are affected because replacement bulbs become harder to obtain due to the ban on placing them onto the market. It does not mean labs must stop using existing systems.

Yes, in terms of supply. Research labs are affected because replacement bulbs become harder to obtain. It does not mean labs must stop using existing systems.

Yes. The UK has its own RoHS framework that closely mirrors EU RoHS. The same exemption expiry applies.

There is no nationwide US ban like the EU’s. Regulation varies by state and mainly affects general lighting. However, global supply chains are still affected by the EU phase-out.

Yes. Metal halide lamps contain mercury and are directly impacted by the phase-out.  Important to note that the ban applies to the manufacture and sale of new bulbs containing mercury – not a ban on using bulbs you’ve already got.

Generally no. Xenon lamps do not contain mercury and are not targeted by mercury regulations, though they have their own cost and availability challenges.

Only from remaining stock. New supply into the EU will stop. Availability will become limited and unpredictable.

Stockpiling is legal, but it is not future-proofing. It delays risk rather than removing it.

Bulbs degrade over time. Storage conditions, age, and handling all affect reliability. Stockpiled bulbs are not a permanent solution.

Almost certainly. Reduced supply and increasing scarcity drive prices upward.

Yes, manufacturers will stop producing mercury lamps for markets where they can no longer be legally sold.

Very. Once stock is gone, there is no replacement path. It creates operational uncertainty.

Not a ban in the sense that using mercury bulbs will be banned – it’s a ban on placing new bulbs into the EU market after February 2027

LED illumination systems are the most direct, easy to switch, mercury-free replacement.

High-quality LED illumination provides stable output, long lifetime, and removes dependence on consumable bulbs.

Yes. LED systems are widely used in modern fluorescence microscopy and offer excellent stability and control.

Yes. LED illumination is already standard in many industrial inspection systems due to reliability and stability.

Modern LED systems provide comparable or superior usable illumination for most applications, with better stability and repeatability.

Yes. LED systems are available with wavelength channels that match standard fluorophores.  Additional filter sets may be required.

In most cases, no. LED systems integrate with existing microscopes.

We have a range of light sources, depending on your application or needs.  From 3 channel white light, to the most advanced 8-channel light sources, we’ve got you covered.  Look at our product pages to find out more

Over time, yes – and by a considerable margin. Using LED Illumination replaces the need for regular bulb replacement costs, reduces downtime risk, and lowers operational uncertainty.

There is an upfront investment, but it replaces ongoing consumable costs and reduces future risk.

Mercury: bulbs, electricity, disposal, downtime risk.
LED: electricity only, with predictable long lifetime.

Often far higher than the cost of the lamp itself, including lost experiments, delays, and emergency purchases.

The cost will vary depending on what CoolLED light source you choose, and the reseller who supplies it.  While the initial outlay may be more than buying metal halide bulbs, the savings in the long term are almost immeasurable.  They are far cheaper to run, last far longer than bulbs, don’t have any disposal costs associated with it, and are future proofed for long term use.

No. In many cases, LED improves stability and repeatability.

They may differ slightly but are easily optimised and become more consistent over time.

Yes. LEDs provide highly stable output ideal for quantitative work.

Yes it massively affects it in a very positive way. LED stability improves reproducibility between experiments compared to using mercury or metal halide

Yes. Instant on/off and stability make LED ideal for automated workflows.

Almost certainly – CoolLED LED Illumination systems are designed to integrate seamlessly with all major microscope manufacturers, with a range of adaptors and light delivery methods available.

Almost certainly.  You can find out which software our light sources are compatible with by visiting our Third Party Imaging Software page

No, not at all.  Our light sources are designed to very much ‘plug and play’.  Connect it to your microscope, turn it on – and then start fine tuning.

Typically hours, not days.  You may need to adapt your existing filter sets to match our LED wavelengths, but the change is usually incredibly straightforward.

Minimal training is needed. Operation is usually far simpler than mercury or metal halide systems.

Yes, our LED systems are designed for easy integration with your existing setups.  They are compatible with almost every microscope brand and manufacturer with a range of adaptors to suit your needs.

Now. You have until February 2027 before the manufacture of new mercury and metal halide bulbs completely stops.  Planning early avoids emergency decisions later.

Assessment → system selection → budgeting → phased installation → validation.

We can help you with every step of the way, so please contact us to start the conversation.

Yes. Many facilities transition gradually, as there are many considerations to factor in.  Budget and initial costs, staff awareness, physical time and effort etc.

By choosing a mercury-free LED Ilumination System with long-term availability and industry-leading technical support.

In most machine vision systems, mercury lamps can be replaced with LED illumination designed for inspection. The right choice depends on your wavelength needs (UV/visible/NIR/SWIR), required uniformity, working distance, and how your system is triggered (strobe/TTL/software). The key benefit is stable output and predictable availability without relying on consumable bulbs.

Metal halide is often used for high-intensity, broad-spectrum illumination, but many industrial inspection setups transition to LED because it offers repeatable intensity, easier control, and no warm-up. The best replacement is usually a wavelength-matched LED solution (or a multi-wavelength approach) rather than trying to replicate “white lamp brightness” across the full spectrum.

For Automated Optical Inspection (AOI), reliability and repeatability matter more than raw “lamp brightness.” LED illumination is widely used in AOI because it supports fast triggering, consistent output, and stable performance over long operating hours. A good migration plan typically focuses on matching the illumination geometry (angle, field coverage) and the wavelength(s) that drive contrast for your defects.

In wafer inspection, illumination stability directly affects defect detectability and measurement repeatability. LED illumination can be an effective replacement for mercury-based sources, especially where you need high uniformity, strong contrast at specific wavelengths, and consistent output over time. The best approach is to define the inspection target (surface vs subsurface, topography vs contamination) and select wavelengths accordingly.

If your system uses mercury or metal halide for UV inspection, the replacement isn’t “any UV LED”, it’s the right UV wavelength with the right optics and uniformity. UV LEDs can deliver strong surface sensitivity and high contrast for many inspection tasks, while providing instant on/off, stable output, and easier integration with strobed imaging.  Our Amora Series ranges from 300 nm to 2000 nm.

Uniformity is often the deciding factor in machine vision. LED inspection illumination can be engineered for high homogeneity across the field, which improves thresholding, metrology accuracy, and defect detection consistency. If uniformity is your main concern, the conversation should start with: field size, working distance, lens/NA, and acceptable intensity variation across the ROI.

LED is typically chosen for machine vision because it’s stable, controllable, and repeatable especially compared with consumable lamp systems that can drift as bulbs age. Stability matters for consistent image intensity, reliable thresholds, reduced recalibration, and fewer false rejects/escapes in automated inspection.