Table 5.

Marine biofilm on paints after immersion in seawater.

		Paint ref.	22/78L	69/31L	82/18L	82/18M	82/18H	Negative paint
Bacteria Biomass (μm3/μm2)	6 weeks	0.160 ± 0.030	0.040 ± 0.020	0.004± 0.004	0.080 ± 0.080	0.110 ± 0.015	0.002 ± 0.002	0.008 ± 0.008
	3 months	2.070 ± 0.230	0.330 ± 0.110	0.230 ± 0.020	0.790 ± 0.190	0.310 ± 0.015	0.005 ± 0.004	n.d.
Bacteria average Thickness (μm3/μm2)	6 weeks	0.270 ± 0.090	0.060 ± 0.040	0.0002 ± 0.002	0.150 ± 0.180	0.210 ± 0.033	0.001 ± 0.001	0.010 ± 0.010
	3 months	3.700 ± 0.360	0.410 ± 0.140	0.030 ± 0.040	1.790 ± 1.210	0.050 ± 0.020	0.003 ± 0.002	n.d.
Diatom Biomass (μm3/μm2)	6 weeks	2.200 ± 0.200	7.890 ± 2.920	0.092 ± 0.080	0.240 ± 0.090	1.500 ± 0.200	0.540 ± 0.260	35.400 ± 1.600
	3 months	6.420 ± 2.350	6.480 ± 0.790	1.190 ± 0.270	0.820 ± 0.200	1.060 ± 0.150	0.340 ± 0.400	n.d.
Diatom average Thickness (μm3/μm2)	6 weeks	4.200 ± 1.200	11.830 ± 4.680	0.130 ± 0.130	0.440 ± 0.250	2.800 ± 0.500	0.330 ± 0.180	86.700 ± 13.500
	3 months	7.240 ± 2.700	9.460 ± 0.440	2.000 ± 0.010	2.300 ± 1.260	1.820 ± 0.850	0.160 ± 0.010	n.d.
Maximum Thickness (μm)	6 weeks	14.300 ± 3.900	57.490 ± 10.800	9.490 ± 6.540	28.500 ± 1.010	34.100± 4.600	15.630 ± 3.900	163.4 ± 1.000
	3 months	20.350 ± 0.500	13.740 ± 0.730	14.170 ± 3.450	12.700 ± 0.500	19.330 ± 7.190	11.330 ± 1.620	n.d.

n.d. not determined.