This precipitation solution has significant advantages over other RNA precipitation methods because it does not precipitate DNA, proteins, or carbohydrates . Available in 100 mL, 7.5M vials. This is an optional method to remove inhibitors of translation or cDNA synthesis from RNA preparations. Note: LiCl precipitating agent may not remove all DNA contaminants from total RNA isolates. If the RNA is to be used in RT-PCR, it should be treated with DNase I. This solution has been rigorously tested to be free of contaminating non-specific endonuclease, exonuclease and RNase activity.