6.1 As described in paragraph 5.1, there are two distinct ballast water
sampling protocols, one based on flow integration and one based on the use of specified
and replicated volumes. As they both use filtration and concentration of the sample the
following section can apply to both methods.
6.2 For in-line sampling, a sampling system should be set up which:
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.1 collects organisms greater or equal to 50 μm;
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.2 allows samples of the ballast water to be taken and filtered;
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.3 enables the amount of ballast water sampled to be measured to allow for
extrapolation of the results; and
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.4 allows the filtered ballast water to be discharged safely without affecting the
stability and safety of the ship, its crew and the samplers, or other discharges
from the vessel such as bilge water.