Pollen grains under the microscope
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Met Office: How to count pollen

Patrick Sachon explains how the Met Office counts pollen, by heading to the roof and laboratories of King's College London.

He shows how the pollen is captured in a device called a Burkard trap and then taken to the laboratory where individual pollen grains are counted and ascribed to particular species, to produce data for national pollen forecasts.

  • 23 May 2012
  • From the section Health