[RASMB] centerpiece info

Wed Jul 15 12:50:26 PDT 2015

Thank you everyone for the info. I'll check them out at lower speeds and see what happens. Nothing ventured nothing gained.

Best regards,

Virgil

> My memory is 40K as well - I ruined a set of Kel-F cells I found when I
> setup my AUC facility by running them at 50K without checking max speeds.
> They are soft and will flow and thus leak.  They should be listed in older
> Beckman literature and part lists which I may have somewhere.
>
>
> John J ³Jack² Correia
> Department of Biochemistry
> University of Mississippi Medical Center
> 2500 N State St
> Jackson, MS 39216
> 601-984-1502 (Chairs Office)
> 601-984-1522 (lab)
> jcorreia at umc.edu
>
>
>
>
>
>
> On 7/15/15, 2:07 PM, "RASMB on behalf of Walter Stafford"
> <rasmb-bounces at list.rasmb.org on behalf of wstafford3 at walterstafford.com>
> wrote:
>
>>Hi -
>>I thought it was 45K. We used them a lot at 60K with sapphire windows for
>>the UV/VIS scanner.
>>Walter
>>
>>On Jul 15, 2015, at 15:04, Laue, Thomas <Tom.Laue at unh.edu> wrote:
>>
>>> Hi-
>>> Yes, they are Kel-F and rated for a much lower rotor speed because the
>>>Kel-F is soft. They aren't dangerous at high speeds, but they do get
>>>ruined.
>>> Maybe Walter can remember the top speed- my recollection is 40K.
>>> Best wishes,
>>> Tom
>>>
>>> -----Original Message-----
>>> From: RASMB [mailto:rasmb-bounces at list.rasmb.org] On Behalf Of Chad
>>>Brautigam
>>> Sent: Wednesday, July 15, 2015 3:00 PM
>>> To: schirfv at biochem.uthscsa.edu; rasmb at list.rasmb.org
>>> Subject: Re: [RASMB] centerpiece info
>>>
>>> Hi, Virgil,
>>>
>>> You might want to try a dive into the RASMB archives; these are
>>>apparently Kel-F/Al centerpieces and according to Marc Lewis, they were
>>>discontinued because the Kel-F could dislodge from the Al.  Sounds like
>>>it's not worth the risk.
>>>
>>> Best,
>>> Chad
>>>
>>> -----Original Message-----
>>> From: RASMB [mailto:rasmb-bounces at list.rasmb.org] On Behalf Of Virgil
>>>Schirf
>>> Sent: Wednesday, July 15, 2015 1:50 PM
>>> To: rasmb at rasmb.org
>>> Subject: [RASMB] centerpiece info
>>>
>>> Good afternoon,
>>>
>>> I found some centerpieces that look like epon-charcoal wrapped with
>>>what I presume to be an aluminum edge. The part number is 331430 but I
>>>can't find it listed on the Beckman website. Does anyone have any
>>>information on these centerpieces - max speed, dimensions same as
>>>current epon-charcoal or not, etc? They appear to be in excellent
>>>condition.
>>>
>>> Thank you,
>>>
>>> Virgil
>>>
>>>
>>>
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>>
>>Walter Stafford
>>wstafford3 at walterstafford.com
>>
>>When you talk, you are only repeating what you already know.
>>But if you listen, you may learn something new. - Dalai Lama
>>
>>
>>
>>
>>
>>
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________________________________________________

Virgil Schirf
UTHSCSA Center for Macromolecular Interactions
Room 421D, Mailcode 7760
7703 Floyd Curl Dr
San Antonio TX 78229-3900
Cell:  (210) 382-3712
Email: schirfv at biochem.uthscsa.edu
Web:  http://cmmi.uthscsa.edu
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