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Table 4 Comparison of action/alert levels using immunomagnetic separation based method (IMS) and culture for Legionella spp

From: Comparing methods of determining Legionella spp. in complex water matrices

    IMS method no.
    Action Alert Satisfactory Total
Legionellaspp   ≥10 4CFU l −1 ≥10 3CFU l −1 <10 3CFU l −1  
Culture no. Action ≥104 CFU l−1 0 0 0 0
Alert ≥103 CFU l−1 0 2 1 3
Satisfactory <103 CFU l−1 1 2 59 62
Total 1 4 60 65