Whilst the the most desirable approach to managing EMF levels is usually the identification of the contributing EM components and manage their levels at source, this is is not always practicable
Whether because the required EMF levels are much lower than normally required to enable the safe and reliable operation of critcal equipment, or whether the combination of location and radiating sources conspire to make this difficult, the best route to protecting such equipment is often the implementation of appropriate shielding in the vicinity of the sensitive equipment ir order to reduce EMF to acceptable levels.
EMC Services has a long history of both assessing the effectiveness of shielding and screened rooms and on advising on the most appropriate shielding strategy to help you achieve the EMF levels you require where you require them.