MJ-Research DNA Engine

Michael Casey Michael.Casey at mbox.fam.admin.ch
Thu Jul 4 17:56:19 EST 1996

Rick Nicholson wrote:
> We had some early temperature problems with our DNA Engine.  It seems
> that they were caused by adding mineral oil to the wells in the block.
> This practice was recommended in the early versions of MJR's manual.
> They later determined that this oil actually was not good for the
> machine and later versions of the manual do not recommend adding
> mineral oil to the wells.  Unfortunately they failed to inform those
> of us who had already bought the machine until we complained about it
> not working properly anymore.  They replaced the faulty block and it
> has worked perfectly, oil free, ever since.  I insisted that they give
> me an internal-sample probe which I use to periodically confirm that
> temperatures are remaining correct across the block.  I am very happy
> with the machine now and have just bought another one, and also a
> neighboring lab which has previously used ours has purchased one for
> themselves and are very happy with it.

I was thinking of buying one of these machines but am now worried because of 
the different postings on the subject. I would be grateful if you could let 
me know for what and how often you use your machine.

Thank you

Michael Casey
Michael Casey
Swiss Federal Dairy Research Institute
3097 Liebefeld
Tel: (+41) 31 323 81 79
FAX: (+41) 31 323 82 27
email Michael.Casey at mbox.fam.admin.ch

More information about the Methods mailing list