[RASMB] rehabilitating bad windows

[Virgil Schirf]

Hi Dyche,

We have successfully used acid washing of windows. Another method that's 
less caustic is the use of pepsinogen prepared according to the 
manufacturer's instructions. This protease will breakdown protein 
buildup on cell windows and centerpieces.

I don't know of any place that will polish windows. I tried Meller 
Optics which manufacture windows, but they don't provide polishing.

Cheers,

Virgil

Dyche Mullins wrote:

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> Two quick questions:
>
> 1. What is the current conventional wisdom on polishing dinged 
> windows? We have a few quartz windows
>     with fine scratches and small gouges. Is it worth having them 
> polished? And if so, where?
>
> 2. We always clean our windows using the Walter Stafford trick of 
> incubating them for 20-30 minutes in the
>     bath sonicator with SDS. This works spectacularly well. A few of 
> our windows, however, appear to have
>     developed a sonication- and SDS-resistant residue. What do others 
> recommend for more thorough
>     cleaning? Chromic sulfuric acid? Nitric acid? Other suggestions?
>
> xoxo
> Dyche Mullins
>
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-- 

Virgil Schirf
CAUMA & CLS
Department of Biochemistry, Rm 4.523U
The University of Texas Health Science Center
7703 Floyd Curl Dr.
San Antonio TX 78229-3900 Voicemail: 210 567-6590
Fax: 210 567-6595
Email: schirfv at biochem.uthscsa.edu