Prof. SorptionSorption expert in Gas/vapor - solid interactions

How to load samples on DVS instrument?

Name: How to load samples on DVS instrument?
Uploaded: 2017-05-03T15:57:20+00:00
Duration: 1 min 33 s
Channel: Prof. Sorption
Description: A walkthrough of loading Avicell powder onto a DVS instrument. Spread the sample thin on the pan to maximize surface area, hang it from the hook with a…

3 May 2017 · 2 min

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1:33

A walkthrough of loading Avicell powder onto a DVS instrument. Spread the sample thin on the pan to maximize surface area, hang it from the hook with a paper card, add a sinker to prevent swinging, then close the chamber and run the test.

Questions this video answers

About 5–10 milligrams.

A clean spatula to transfer, a paper card (paper cut) to place the sample on the hook, and a sinker to stop oscillation.

Chapters

I use a clean spatula, then move some of the sample with my spatula from the container to the sample pan. The amount of mass that I need depends on the type of sample. In this case, I'm using Avicell. I know that the material have a very high uptake of water, so 5, 10 milligrams of sample, it should be more than enough to give me very acceptable data. Now what I want to do right now is spread the sample across the surface of the pan by gently tapping it. So in this way it offers a higher surface to the absorption. Now to load the sample in the system, I open the chamber by pushing the handle and I use actually this normal cut, this paper cut, to place the sample on my hook on the end of the wire. And I use this sinker actually to stop the oscillation of the sample itself. When I know that the sample is nice and stable, I can now close the chamber, close slowly the door of the system, and I'm actually able to start my experiment.