Leaky Filters: A Warning to Aquatic Ecologists

@inproceedings{Stockner1990LeakyFA,
  title={Leaky Filters: A Warning to Aquatic Ecologists},
  author={John G. Stockner and M. Emilia Klut and William P. Cochlan},
  year={1990}
}
We examined the retention characteristics of commonly used 0.2-μm nucleation-track (Nuclepore®, Poretics®), polymer (Millipore®, Sartorius®) and inorganic membrane (Anopore®) filters. Scanning electron micrographs of the filter surface showed many to contain large holes or pores, some 5 × larger than the manufacturer's stated nominal pore diameter. Electron micrographs of filtrates from both fresh and seawater samples contained a variety of organisms, including viruses, ultramicrobacteria… CONTINUE READING

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