[RASMB] centerpiece info

[John J. Correia]

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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