Table T6. Potential contamination of slurries obtained using fluorescent microspheres (0.5 µm diameter) as prokaryotic cell mimics, deployed at amounts of 4 x 1012 microspheres per core, Holes 1225A and 1225C.

Table T6. Potential contamination of slurries obtained using fluorescent microspheres (0.5 µm diameter) as prokaryotic cell mimics, deployed at amounts of 4 x 10¹² microspheres per core, Holes 1225A and 1225C.


Core, section, interval (cm)	Sample type	Microspheres/50 fov	Microspheres/ mL of sediment	Mean	Potential contamination (nL/mL of sediment)	Delivery confirmed
201-1225A-
2H-3, 33-45	Slurry	48	8,555
	Vial	37	42,456	25,505	0.128	Yes
12H-3, 33-45	Slurry	12	2,139
	Vial	6	5,503	3,821	0.019	Yes
22H-3, 33-45	Slurry	0	0
	Vial	0	0	0	0	Yes
34H-3, 78-90	Slurry	0	0
	Vial	0	0	0	0	No

201-1225C-
1H-1, 44-61	Slurry	0	0
	Vial	0	0	0	0	Yes

Notes: Vial = secondary check using vial samples collected for total bacterial counts. fov = a field of view under the microscope approximating an area of 9000 µm².