Are redundant ECDs creating a hidden legal risk in your laboratory?

Electron Capture Detectors (ECDs) have been used in gas chromatography laboratories for decades, particularly for environmental, food, and chemical analysis. However, what many laboratories overlook is that ECDs contain a Nickel-63 (Ni-63) radioactive source, meaning they remain regulated under UK radiation safety and environmental legislation throughout their lifetime.

A common issue arises when detectors are removed from service but not formally disposed of. In many laboratories, ECDs are taken out of instruments during upgrades, failures, or decommissioning and placed into storage with the intention of dealing with them later. Over time, these detectors can be forgotten or fall outside normal equipment tracking systems.

Under UK regulations, simply storing a Ni-63 source counts as holding radioactive material. If an ECD has been removed from its instrument and stored separately, laboratories may require a specific licence to hold that source. Without the appropriate authorisation, sites may unknowingly find themselves in a non-compliant position.

These situations often only come to light during audits, laboratory relocations, or equipment clear-outs. By that point, organisations can be left trying to quickly resolve a compliance issue involving radioactive material.

Because of the Ni-63 source, ECDs cannot be disposed of through normal laboratory waste routes. Instead, detectors must be handled and disposed of by licensed organisations that can manage the transfer, transport, and regulatory documentation required for legal decommissioning.

Ellutia Ltd, a UK-based manufacturer and service provider with more than 30 years’ experience in gas chromatography, offers licensed ECD assessment and disposal services. The company supports laboratories by managing the entire process, from initial evaluation through to compliant disposal and the provision of documentation confirming that the radioactive source has been legally decommissioned.

Laboratories that may have unused or stored ECDs are encouraged to review their current situation and confirm that their licences cover the detectors they hold.

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