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Specimen of the Week: A Cocktail of Spirits: Fluid Preservation at the Grant Museum

KatieDavenport-Mackey19 July 2019

The Grant Museum contains a staggering number of specimens – the estimate is more than 68,000 – and approximately 10% are fluid preserved specimens. Fluid preservation describes specimens that are preserved in chemicals that protect them from deterioration. There are three components to a fluid preserved specimen:

  1. The fixed specimen: The specimen is injected or ‘fixed’ with a chemical that prevents decomposition by stabilising the protein molecules. The most common fixative is formaldehyde.
  2. The preservative fluid: Most fluid preserved specimens are preserved in solutions of alcohol or formalin, a mixture of formaldehyde and water.
  3. The container: Containers are typically glass jars or bottles sealed with a closure.

Below is a brief description of some of the different preservative fluids that can be found in the Grant Museum.

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Specimen of the week 279: Jar of mole (crickets)

Will JRichard17 February 2017

Hello! Will Richard here, blogging again for you all. And this time I’ve chosen a specimen that I can’t believe isn’t better known. Everybody loves a jar of moles… so how about a jar of mole crickets?

LDUCZ-L45 European mole cricket

LDUCZ-L45 European mole cricket

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The Art of the Grant

Emma-LouiseNicholls25 February 2014

At the Grant Museum both staff and our visitors are very lucky because we do not have quite the same level of red tape as most non-university based museums. Our collections are historically for teaching only, and even now are still used heavily in undergraduate courses at UCL, which means that physical access to specimens is much more possible than in non-teaching based collections. It is for this reason, as well as the shining personalities of the Grant Museum staff no doubt, that our Museum is extremely popular with artists. The ability to choose a specimen (within reason… the mounted donkey skeleton is a little heavy) and have it placed on the table in front of you for you to gaze at and draw to your heart’s content, is surely nearing unparalleled levels of excitement. (more…)