Contained Flexibility An extra level of protection is available in the form of a High Containment Screen. To improve containment levels within the working area of the booth, we offer our High Containment Screens which will allow operators to achieve OELs in the region of <10ųg/m³ when operated in conjunction with agreed SOPs. Third Party Testing has seen results taken at FAT of such a system confirmed at an OEL level of <1ųg/m³.