Ballast Water Sampling and Sample Analysis for Compliance Control - Global Maritime Transport and Ballast Water Management: Issues and Solutions - page 196

Fig. 8 Point-source sampler used for sampling ballast water through sounding pipes
The valve of this sampler has a 3 mm diameter. The time needed to completely
fi ll the sampler is approximately 1 min and its capacity is 0.225 l which may be
sampled by one pull. Multiple replicates could be used to increase the water volume
sampled. An example is given as Fig. 8 .