Deoxyribonuclease I; Purity: Deoxyribonuclease I is Lyophilized in vials. Each 10,000 unit vial contains 2 mg glycine, 2 moles calcium, and 10,000 units of DNase I. Each 2,500 unit vial contains 0.5mg glycine, 0.5 moles calcium, and 2,500 units of DNase I. Dissolving the entire 10,000 unit vial in 5 ml, or the entire 2,500 unit vial in 1.25 ml, provides the equivalent of a 1 mg/ml solution. (ku = 1000un). Store at 2 - 8C., 500 Units