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Table 2 Differences among mean microbial counts registered for fan coil units surfaces before (T1) and after (T2) sanitization with BATT2 (n. of samples: 20 for each mean value).

From: Automated cleaning of fan coil units with a natural detergent-disinfectant product

Room Mean value T1± D.S. (CFU/25 cm2) Mean value T2± D.S. (CFU/25 cm2) Variation (%) Student's t p
A 0.485 ± 0.972 0.364 ± 1.00 -25 0,273 0,7874
B 3.076 ± 7.799 0.28 ± 0.04 -91.1 1.605 0,1167
C 2.6 ± 7.87 0.56 ± 0.094 -78.5 0.818 0,4183