Water, Ultrapure Molecular Biology Grade is suitable for use in molecular biology applications that require high quality water. Type I ultrapure (18 megOhm-cm) water is subjected to ultrafiltration to eliminate RNase, DNase, protease, pyrogens/endotoxins (< 0.001 EU/mL) and bacteria (< 1 cfu/mL). Each lot is quality tested for the absence of RNase, DNase and protease contamination. The product is not certified as sterile, and is therefore not recommended for cell culture. Water, Ultrapure Molecular Biology Grade is free of toxic chemical additives, such as diethyl pyrocarbonate (DEPC). Applications: buffer preparation, protein and nucleic acid electrophoresis, DNA and RNA preparation, southern and northern blotting, PCR, DNA sequencing, cloning, and more.