3700 Evaporation

Donna Brown donna at resgen.com
Wed Oct 18 08:36:28 EST 2000

Hi Arthur-
We resolved that issue here at Research Genetics with a very low tech
solution.  We add an additional 5 ul water to each plate depending on the
order of loading (1st plate = 10 ul, 2nd = 15ul, 3rd = 20 ul, 4=25 ul)  Our
results have been quite nice with this scheme and we avoid dealing with
sticky plate seals.
Best regards-

>I need some assistance with my 3700, we have just had installed and have
>experienced problems with 96 well plates. The 3rd plate gives us many no
>reactions - failures , no signal detected from our reactions upon analysis.
>It appears that the samples we analyse, that have been redissolved in water
>evaporate, and condensation occurs  in the 96 well plate on the side of the
>The temperatue inside the 3700 is 33 deg plus or minus 1 deg. whilst running
>and 26 deg. when idle.
>Formadide dilutions of samples gives us poor resolution after 550 bases
>using POP_6.
>The control(pGem) reads up to 800 bases with formamide as the diluent.
>If any person has suggestions it would be appreciated.
>We have removed the perspex cover and installed a small  muffin fan this has
>helped the situation, by reducing the Temperature. 
>Has anyone used 2-Pyrrolidinone  as a diluent ,and at what concentration and
>what length of read do you obtain from your sequencing.
>Thanking You in anticipation
>Arthur Mangos
>Molecular Pathology
>Institute of Medical and Veterinary Science Adelaide. Australia


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