NaI solution in geneclean

D. KIM dkim at
Tue Jun 18 11:52:59 EST 1996

In article <Pine.SOL.3.91.960617083844.29608A-100000 at> Francois Coulier <coulier at> writes:
>I got the same problem with some batch of NaI. It did not affect the 
>yield of purification, nor the clonabiliy of the purified fragment. 
>interestingly, when I mixed the last few ml of the yellow NaI with a new 
>batch, the color disappeared.

WRT yellow color in NaI solns.

You might see the FAQ entry about making your own Geneclean. One of the 
details of making the NaI solution is to add sodium sulfite as a 
preservative.  This prevents yellowing, etc, I believe.

Daniel Kim

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