As a result of the assessment of the risk the responsible official body shall consider and lay down as appropriate: ... (b) further quarantine measures according to the specific biology and epidemiology of the type of material involved and the activities approved, - maintenance in facilities which separate chamber "double door" access to personnel, - maintenance under negative air pressure, - maintenance in escape-proof containers with appropriate mesh size and other barriers, e.g. water barrier for mites, closed soil containers for nematodes, electric insect traps, - maintenance in isolation from other harmful organisms and material, e.g. viruliferous plant food material, host material, - maintenance of material for breeding in breeding cages with manipulation devices ...
