# Talk:Centrifuge

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 Definition:  A device which separates particles or droplets suspended in a liquid based on their relative densities,using centrifugal force generated by spinning the sample rapidly around a fixed axis. [d] [e]
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 Workgroup categories:  Engineering, Chemistry and Physics [Editors asked to check categories] Subgroup category:  Chemical Engineering Talk Archive:  none English language variant:  American English

## Do check "what links here".

There are a fair number of references to centrifuge; I simply never got around to writing the detailed article, while I did do autoclave. Click on "what links here", near the bottom of the toolbar on the left. Howard C. Berkowitz 20:32, 18 November 2010 (UTC)

## Professor Hunter's evaluation comments

• Add Gas Centrifuges for Uranium refining
• sentence added
• Add Ultracentrifuges
• included in list
• Compare Vr to Vg
• added to equations

## Sarah Richardson's evaluation comments

• Explain more. Link to sedimentation and centripetal acceleration or else explain a bit more. Why is it useful? Ex: used to determine particle or macromolecule density.
• changes made
• Links‐great!
• Units?
• added
• ${\displaystyle \omega =(rpm)(2\pi /60)}$
• I have a lot of equations already and this one seems unnecessary
• A picture with labels probably help to explain the equations. I think Professor Hunter had a good picture in her Lecture notes. Also a sample calculation might be helpful or a link.
• working on it

## Madeline Schiesser's evaluation comments

• Definition. Elaborate a bit more. Also, you cannot assume that the reader knows what sedimentation time means, so you will need to give a mini-def within your definition. May also want to specify that particles are separated by density or the like.
• expanded a bit and provided links
• You define Industrial centrifuges as one of the three main categories, but do not actually have a sub-heading for it. I get the impression that “Separation Centrifuges” are a type of “Industrial Centrifuge”. Use consistent language to make this clear, or definitions linking one to the other.
• change made
• In the disk stack centrifuge, you say that you have a series of disks, then you say that particles are collected at the sides of the bowl. What bowl? You cannot suddenly have a bowl when a second ago you only had disks, this confuses the reader. Now they do not know if a disk stack centrifuge is made of disks, bowls, or a combo of the two. You must very carefully describe the basic physical parameters of the device the best that you can and be very, very consistent with word choice when dealing with technical writing.
• change made
• Your use of “however” in the disk stack centrifuge section does not make a great deal of sense because it is not clear what you are contrasting. I think you mean to say that it is not always necessary to remove parts of the apparatus to clean it, as opposed to the bowl centrifuge, because there are means of automatic cleaning? If so, you need to make that point more clearly.
• change made
• On that note, try to describe the centrifuge devices so we can get a picture in our head of what they look like. This will be easier once you have picture to which you can refer. (And a strong device description will really help put into context what is going on inside the device. Try to then link these two.)
• working on it
• Equations: Try to get them more in paragraph (or sentence) form. I like the fact that you are defining in words what each equation is, but you could go into more detail linking the math together so that it flows.
• working on it
• Do you still intend to put in all the types of centrifuges you have in your outline? I hope so; even if you just link them, at least give a brief definition of what each is.
• change made