The dNTP solution provided by BioChain is specially manufactured and tested for downstream applications in molecular biology. The ready-to-use mix contains varied concentrations depending on the purpose. Some of the essential uses for this dNTP mix include PCR/RT-PCR, DNA labeling, and DNA sequencing. BioChain's dNTP mix is also purified with preparative high-performance liquid chromatography (HPLC), which guarantees at least a 99.5% level of purity. The product has undergone further rigorous quality testing: - The concentration is verified by optical density spectrophotometry. - Preparation is free of DNase contamination (determined by incubation of 4 dNTPs with radioactive substrates). - Preparation is free of RNase contamination (determined by incubation of 4 dNTPs with radioactive substrates). - Each lot of the product is tested for performance with Taq DNA polymerase.