Table 1

Mean currents recorded during experiments, with range indicated in brackets.

Bacterium
Average Current (range) (μA)



Negative ions
Positive ions
Negative ions with mica plate
Negative ions with wire mesh

Serratia marcescens
76.0 (65 – 95)
42.3 (30 – 50)
0.000 (0 – 0.005)
0.001 (0 – 0.01)
Acinetobacter baumanii
102.0 (40 – 150)
35.3 (30 – 45)
0.003 (0 – 0.005)
0.000 (0 – 0)
Staphylococcus aureus
65.00 (30 – 90)
36.0 (25 – 45)
0.003 (0 – 0.05)
0.000 (0 – 0)
Burkholderia cenocepacia
109.0 (95 – 120)
32.0 (30 – 35)
0.022 (0 – 0.2)
0.000 (0 – 0)
Pseudomonas aeruginosa
97.0 (80 – 105)
36.3 (30 – 40)
0.003 (0 – 0.025)
0.000 (0 – 0)
Mycobacterium parafortuitum
113.0 (95 – 130)
36.3 (25 – 45)
0.009 (0 – 0.05)
0.000 (0 – 0)
Bacillus subtilis
114.3 (90 – 135)
27 (20 – 40)
0.002 (0 – 0.025)
0.000 (0 – 0)

Fletcher et al. BMC Microbiology 2007 7:32   doi:10.1186/1471-2180-7-32