This article outlines a practical evaluation structure rather than a universal test protocol. Formal acceptance criteria should be set by the qualified dosimetry laboratory according to its accredited procedures, applicable regulations and intended monitoring service.

Stage 1: document and inspect the batch

Stage 2: establish background and repeatability

Prepare the selected elements using the laboratory's intended procedure. Measure background after preparation. Irradiate a sample at a suitable reference dose, read the elements and repeat the preparation cycle. Compare element-to-element variation and cycle-to-cycle repeatability.

Stage 3: test the intended operating range

Use multiple dose points spanning the laboratory's intended routine range. Where the application requires it, evaluate relevant photon energies, beta radiation qualities, angular response or neutron response. A neutron-sensitive element should be assessed within a dedicated neutron dosimetry design rather than treated as a direct substitute for a photon-only element.

Stage 4: check storage and monitoring-period effects

Fading, storage conditions, transport and the interval between irradiation and readout can affect results. Include a study that reflects the planned monitoring period and handling workflow. The laboratory should also define how control elements and background corrections will be managed.

Stage 5: approve, qualify or reject

Summarise results against written limits. If the batch is accepted, retain the test record and reserve samples. If the batch is only suitable for a narrower use case, document the restriction. If it does not meet the intended criteria, reject it or request another batch.

Procurement principle: sample testing is not an obstacle to purchasing. It is the fastest way to build confidence in a new supplier while protecting the integrity of the laboratory's dosimetry service.

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