Ambion™ yeast tRNA purified from home-breeding yeast. When used at a final concentration of 10–20 µg/mL, yeast tRNA is an effective co-precipitating agent that aids in the recovery of trace amounts of nucleic acids. It is supplied in single tubes containing 0.5 mL of yeast tRNA at a concentration of 10 mg/mL.

What is a coprecipitant?
Co-precipitating agents are inert substances that aid in nucleic acid recovery during ethanol precipitation. Although they can be used to precipitate large amounts of nucleic acid, they are also essential for the quantitative recovery of small amounts of nucleic acid in dilute solutions. Generally, such molecules are used only to reveal the granular precipitate after centrifugation.