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Table 3 Differences among mean staphylococcal 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 0.2 ± 0.7 0.26 ± 1.8 +30 0,93 0,3576
B 2.5 ± 6.06 0.07 ± 0.2 -96.8 1,77 0,0835
C 2.1 ± 5.8 0.03 ± 0.1 -98.5 1,61 0,1142