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I need to prepare a sample of powder on a slide. Is there a standard procedure I can use to disperse the powder with only a jet of air entering some kind of a box?
Thanks

To disperse powder consider using a devise used by artists which is 2 small diameter pipes at about right angles. Immersing one in the powder and blowing into the other creates a "vacuum" lifting the paint up the former pipe and creating a cloud of paint (in this case powder). This may be to what you are referring. A thin plastic film shroud over the instrument of dispersal and specimen should serve to minimize any mess. I have a plastic belows which I use to blow out my keyboard (picked up at a medical surplus) but a length of surgical tubing may make the process easier.

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