6Ganzi G C, Parise P L. The Production of Pharmaceutical Grades of Water Using Continuous Deionization Post-Reverse Osmosis[J]. J of Parenteral Science & Technology, 1990, 44(4) :231-241.
7Finlay J M, Hango J T, Hango R A. A novel approach to a pharmaceutical R & D high purity water system [J]. Phar Eng, 1995(5/ 6) :88-96.
