This Ambion® ribonucleotide triphosphate (rNTP) solution is a component of the MAXIscript® Kits (SKU#s AM1312, AM1316, AM1314, AM1326, AM1324, AM1318, AM1322, AM1320, AM1310, and AM1308) and is supplied in one tube containing 100 μL. Each is subjected to RNase testing as well as a functional assay to ensure high levels of incorporation. It may also be used in ligation and phosphorylation reactions.