Stability of IPTG?

[WS]

Christian Praetorius wrote:

>
> Why do you want to keep it at room temperature?

... happened by accident, stood there for some time, and the stock
which I relied on has not been refilled. Shit happens. Had to use the
water solution for one megaprep and had in my mind (lab myth?) that
IPTG would degrade when in contact with water for prolonged time.

> We usually made a
> larger batch in water (eg 10ml), made 1ml aliquots and stored them at
> -20. We never observed any problems.

thats good news!

Many Thanks!

Wolfgang

> 
> Christian