Scanner 4: Transition to 366 nm LED Technology

In line with the EU phase-out of mercury-based light sources, the Scanner 4 will transition to 366 nm LED technology starting in Q4 2026.

The new standard configuration replaces the mercury lamp with a 366 nm LED. The deuterium and tungsten light sources are unaffected — existing applications, validated methods, and full spectral scanning continue as before. Absorbance measurements at other wavelengths, including 254 nm, remain fully supported through the deuterium lamp at comparable detection limits.

What changes

• The mercury lamp is replaced by a 366 nm LED as the standard light source.
• Deuterium and tungsten light sources are unaffected.
• Scanning compartment illumination is discontinued, as its fluorescent tube is also subject to the mercury phase-out.
• Article number and pricing are unchanged.
• A retrofit upgrade kit will be available for existing instruments.

Existing instruments

Current Scanner 4 instruments can be upgraded to the 366 nm LED using the dedicated upgrade kit, once available.

Mercury lamp availability

If a mercury lamp is required for a new Scanner 4, it will remain available as a separate order item for as long as EU regulations permit. Installation in place of the LED must be carried out on-site by a qualified service engineer; no further system adjustments are needed.

Software requirements

The 366 nm LED requires visionCATS 4.2 with the applicable service pack. This update enables the software to distinguish between mercury-lamp and LED operation. Earlier versions of visionCATS do not support the LED.

For further details on the Scanner 4 LED transition, please contact us.