I am working with smallest amount of smallest ribozyme-oligos, so I am
quite familiar with your problem. I always work with glycogen (1
microliter of a 10 mg/ml solution per precipitation) - it coprecipitates
smallest amounts of even smallest RNAs, is visible, perfectly soluble in
water (but gives a visible pellet in EtOH washing steps), is cheapy
even for molecular biology purposes and does in NO way influence nucleic
acid or enzyme rections.
Hope, this helped - Anke Wichert
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