Team:Newcastle/Scanning EM

From 2010.igem.org

(Difference between revisions)
(Fixation)
(Dehydration)
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==Dehydration==
==Dehydration==
-
25% ethanol: 30 mins.
+
*25% ethanol: 30 mins.
-
50% ethanol: 30 mins.
+
*50% ethanol: 30 mins.
-
75% ethanol: 30 mins.
+
*75% ethanol: 30 mins.
-
100% ethanol: 1 hr.
+
*100% ethanol: 1 hr.
-
100% ethanol: 1 hr.
+
*100% ethanol: 1 hr.
Once in 100% ethanol, samples are dried using a Baltec Critical Point Dryer.
Once in 100% ethanol, samples are dried using a Baltec Critical Point Dryer.

Revision as of 22:02, 27 October 2010

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Contents

Scanning EM

This is a standard method for Scanning Electron Microscopy. Specimens vary greatly and the final protocol should be decided by referring to text books and publications.

Fixation

Fix in 2% Gluteraldehyde in Sorensons Phosphate Buffer overnight (minimum).

Rinse in Sorensons Phosphate Buffer 2x 15 mins.

Dehydration

  • 25% ethanol: 30 mins.
  • 50% ethanol: 30 mins.
  • 75% ethanol: 30 mins.
  • 100% ethanol: 1 hr.
  • 100% ethanol: 1 hr.

Once in 100% ethanol, samples are dried using a Baltec Critical Point Dryer.

Mounting

Mount of an aluminium stub with Achesons Silver ElectroDag.

Gold coating

Coat with 15nm of gold using a Polaron SEM Coating Unit.

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