NXGEN T7 RNA POLYMERASE 25K UReliable and robust enzyme for production of mRNA transcripts in a variety of applications. Supplied at 50,000 U mL in 50 mM Tris HCl, 100 mM NaCl, 1 mM dithiothreitol, 1 mM EDTA, 50% glycerol, 0. 1% Triton X 100, pH 7. 9 @ 25C. Also provided is 10X T7 RNA Polymerase Buffer which in 1X form is composed of 40 mM Tris HCl, 6 mM MgCl2, 10 mM Dithiothreitol, 2 mM Spermidine, pH 7. 9 @ 25C. Key features Reliable transcription. Product information T7 RNA