Invitrogen 10 mM dNTP Mix is a mixture of four nucleotides (dATP, dCTP, dGTP, dTTP) in 0.6 mM Tris-HCl. Each nucleotide is at a concentration of 10 mM. 10 mM dNTP mix is suitable for use in polymerase chain reaction (PCR), sequencing, fill-in reactions, nick translation, cDNA synthesis, and TdT-tail