The PAB-3R contamination controller measures α and β surface contamination of wipes in high gamma background environments, and compares it with the preset radiological contamination thresholds.

If there is no wipe, it measures the ambient background and automatically adapts the measurement time to guarantee a constant measurement accuracy.

It is used for non-fixed contamination pre-controls with a large surface sampling, before statutory tests with the PAB-2 smear test controller.