Mix containing 10 mM each of dATP, dCTP, dGTP, and dTTP (1 x 200 µl); dNTP Mix, PCR Grade contains premixed dATP, dCTP, dGTP, and dTTP in water (pH 7.5), each at a concentration of 10 mM. Highly pure dNTPs are important for successful PCR, as the presence of contaminating impurities in PCR can result in a decrease in amplification sensitivity and product yield.