| definition |
- Go-Flo bottles are 'water-sampling bottles" used by oceanographers to obtain
subsurface water samples at the required depths. The Go-Flo water-sampling
bottle is used whenever uncontaminated samples need to be taken, for instance
for the chemical analysis of trace metals in sea water. The Go-Flo bottles are
closed when they are lowered into the water column and open automatically at a
depth of about 10 meters. As a result, these bottles are neither contaminated
on deck nor as they are lowered into the water, by the uppermost layer of the
seawater surface that is contaminated by interaction with the air.
Several Go-Flo bottles (12 or 24) can also be attached to a 'rosette sampler'.
In this, water bottles are mounted in a single frame which is attached to the
end of the oceanographic wire. This has an electrical conductor incorporated;
the bottles can be closed when desired on electrical command from the deck.
The rosette can then lowered into the water column along with an 'STD'
measuring system (measures salinity, temperature, concentration of dissolved
oxygen, turbidity, chlorophyll level, etc. in the water column to a depth of
1600 meters). In this case, the bottle closing mechanisms are activated by the
STD system each time a required depth is reached.
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