• Still, many confusions on how to select the most suitable, hygienic and cost effective solution然而,在怎么选择最合适、卫生和成本、
效能方面最困惑
• The key is to understand the basic principle
• a permissive range of physical conditions such as理化
条件
– O2 concentration氧浓度 – Temperature温度 – pH
© Alfa Laval
Slide 11
Bacteria and pH 微生物和pH
Growth rate vs. pH for three environmental classes of procaryotes. 原核生物在不同pH条件下的生长速率
Sterile bulk API or BPC
Minimum water type
Suitable noncompendial
PW
WFI
API = Active Pharmaceutical Ingredient活性药用成分(原料药) BPC = Bulk Pharmaceutical Chemical(医药中间体)
© Alfa Laval
Slide 5
USP Specifications定义: PW vs.
WFI
PW (Purified Water) WFI (Water for IFra bibliotekjection)
Water conductivity and < 1,3 μS/cm at 25°C* < 1,3 μS/cm at 25°C*