Latest Research: Braarudosphaera sp

The ideal slide contains particle sizes range between 0 and 30µm with an even spatial distribution throughout this slide. The gap between individual particles should be sufficient to able nannofossils to be easily located and identified.

The particle size variation must be constant between nannologist, but can be modified according to the age of sediments. The size variation may be controlled by the time allowed for settling from suspension , prior to pipetting of the sample. The spatial distribution of particles may be vary between nannologist and can be influenced by the quantity of distilled water used to process the sample.

  • Wrap the small but representative sample in a paper towel and crush it gently using a small hammer.

  • Place the crushed sediment into a beaker and add distilled water.

  • Stir the suspension and wait 1 or 2 minutes for the sediment to settle. Discard the settled fraction.

  • Place the supernatant into another beaker.

  • Allow the suspended sediment to settle for 10 to 15 minutes.

  • Discard the supernatant and use the settled fraction.

  • Dilute the settled sediments then spray on to a slide.

  • Dry the slide on a hot plate.

  • Affix the coverslip using an optical mounting medium (Norland Optical Adhesive 61.)

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