UV sterilization of PCR reagents

Wolfgang Schechinger hubahopp at gmx.de
Wed Oct 20 13:29:01 EST 2004


you'll probably kill yll your reagents. UV induces lots of radicals and
specially will destroy your bases.... That's the way you're actually
killing the bacteria in your mixes. Better spend a few bucks on Molecular
Biology Grade Water (a sixpack of 100 ml bottles is about 100 USD, aliquote
and frezze down 1 ml aliquots to avoid contamination of your stock). Or
stick at least to RO "distilled" water from local pharmacy or gas station
(for batteries). If you don't have an autoclave, sterilize it in a pressure
cooker or use 0.1 um syringe filters.

At 19:01 20.10.2004 +0100, Charlie Butterworth wrote:
>I am setting up a new molecular lab, and will not have access to Type I 
>water for reagents.  I can filter sterilize most of the reagents, and / 
>or use purchased Type 1 water.
>However, I am thinking that small quantities of water that would go 
>into reagents for DNA stocks (such as TAE for DNA stocks, and water for 
>dissolving new primers) could be aliquoted into 1.5 mL tubes then 
>exposed to UV light from a UV lamp (mineralight).  Even PCR cocktails 
>(minus Taq, primers, template and mineral oil) could be UV sterilized 
>in PCR tubes.
>OK, so are PCR tubes and 1.5 mL plastic tubes UV permeable?
>If so, which wavelengths of UV are best?
>I'd appreciate any advise.
>Charles A. Butterworth (Ph.D.)
>Research Specialist
>Desert Botanical Garden
>Phoenix, Arizona
Wolfgang Schechinger, PhD (Dr. rer. nat.)
Chemistry and Life Sciences

Med Clinic I / Endocrine Research 
University Hospital "Bergmannsheil"
Bürkle-de-la-Camp-Platz 1
44789 Bochum

Phone +49-234-302-4789
Fax   +49-234-307-4790

wolfgang.schechinger at gmx.net


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